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25 Best Betta Heaters
for February 2021

Last Updated On

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1
9.8
SCORE
hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon
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hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller

Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon

by hygger
What We like

For Fish Tank 5-15 gallon50W aquarium heater, voltage AC110-120V 60HZ, power cord is 4.6ft. Heater rod length is 5 inch, mini compact heater for small fish tank use. Perfect for betta tank. A very compact heater, easy to hide in the tank

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Product Features

  • With Built-in Thermometeryou can set the the temp from 68 to 90,temp exactness is within 2 degrees in fahrenheit. There is a built-in thermometer in the heater to detect the water temp, not need to buy seperate thermometer
  • Durable Quartz Glassthis aquarium heater tube is heat-resistant quartz glass made, excellent in explosion-proof, can be used in fresh water and salt water aquariums, white alundum sand as the heat-conducting media, service life can be 3 years or more
  • Fully Submersiblethis fish tank heater is waterproof, must be fully submerged in water when working, place it horizontally or vertically near the water intake or where the way of water flow
  • Automatic Stop & RestartEffectively maintain the tank water in the constant temp you set, stop heating when water temp reaches to the set temp and restart heating when the water temp is 1-2 below the set temp.The indicator light on the controller will be on red when it's heating, will be off when it stop heating

Durable quartz glassthis aquarium heater tube is heat-resistant quartz glass made, excellent in explosion-proof, can be used in fresh water and salt water aquariums, white alundum sand as the heat-conducting media, service life can be 3 years or more With built-in thermometeryou can set the the temp from 68 to 90,temp exactness is within 2 degrees in fahrenheit. there is a built-in thermometer in the heater to detect the water temp, not need to buy seperate thermometer Automatic stop & restarteffectively maintain the tank water in the constant temp you set, stop heating when water temp reaches to the set temp and restart heating when the water temp is 1-2 below the set temp.the indicator light on the controller will be on red when it's heating, will be off when it stop heating Fully submersiblethis fish tank heater is waterproof, must be fully submerged in water when working, place it horizontally or vertically near the water intake or where the way of water flow

2
9.7
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Aqueon 100101230 Flat Submersible Heater, Black,7.5W, up to 3 gallon
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Aqueon 100101230 Flat Submersible Heater

Black, 7.5W, up to 3 gallon

by Central Garden & Pet
What We like

Quick and easy installation

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Product Features

  • Note: Do NOT operate or leave product plugged in when it is outside of water
  • Can be used with glass or acrylic enclosures
  • 7.5 Watt works best for 1 to 3 gallon fish tanks
  • Fully submersible
  • Shatterproof construction

Fully submersible Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank Shatterproof construction 7.5 watt works best for 1 to 3 gallon fish tanks Can be used with glass or acrylic enclosures Warms aquarium water up to 6f above ambient room temperature Note: do not operate or leave product plugged in when it is outside of water

3
9.7
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Aqueon Aquatic Flat Heaters 5 Watts
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Aqueon Aquatic Flat Heaters 5 Watts

by Central Garden & Pet
What We like

Quick and easy installation

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Product Features

  • Can be used with glass or acrylic enclosures
  • Shatterproof construction
  • Note: Do NOT operate or leave product plugged in when it is outside of water
  • 5 watt works best for up to 2.5 gallon fish tanks
  • Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank

5 watt works best for up to 2.5 gallon fish tanks Shatterproof construction Note: do not operate or leave product plugged in when it is outside of water Fully submersible Can be used with glass or acrylic enclosures Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank

4
9.6
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Marina Betta Submersible Heater and Floating Thermometer Bundle, Aquarium Heater and Thermometer with Suction Cup
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Marina Betta Submersible Heater and Floating Thermometer Bundle

Aquarium Heater and Thermometer with Suction Cup

What We like

Heater and thermometer are easy to install in your betta fish tank; use the suction cups to place on the side of the aquarium

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Product Features

  • Easy-to-read floating thermometer with suction cups
  • Thermometer includes a safety zone indicator
  • Creates ideal conditions for bettas and other tropical fish to live in
  • Submersible heater for aquariums up to 1.5 gallons

Creates ideal conditions for bettas and other tropical fish to live in Submersible heater for aquariums up to 1.5 gallons Thermometer includes a safety zone indicator Easy-to-read floating thermometer with suction cups

5
9.6
SCORE
hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank, Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta, Turtle
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hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank

Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta, Turtle

by hygger
What We like

Compact Small Heater110-120V/60HZ oval shape design little aquarium heater, fast heating for small fish tank. 50W tank heater is for 1-6.5gallon, 100W tank heater is for 6.5-13 gallon. Heater Dimension: 2.7x1.4x 4.5 inch. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater, it's easy to install it on to glass, acrylic or plastic tank

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Product Features

  • Digital Displaywith led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. The led will display the set temp digit only when you press the controller
  • Shut off When Out of Waterplease note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying E1, when fully in water again it will return to normal work again
  • External Controllereasy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63 to 94, temp accuracy 1. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done. Keep the controller away from water, it's not waterproof
  • Reliable Thermostatthis an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. The tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1 off the set temp. If the water temp is over 95, the heater will auto shut off and led displaying HH, it will work normally again when the water temp is lower than 95

Shut off when out of waterplease note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying e1, when fully in water again it will return to normal work again Digital displaywith led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. the heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. the led will display the set temp digit only when you press the controller External controllereasy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63 to 94, temp accuracy 1. every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done. keep the controller away from water, it's not waterproof Reliable thermostatthis an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. the tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1 off the set temp. if the water temp is over 95, the heater will auto shut off and led displaying hh, it will work normally again when the water temp is lower than 95

6
9.5
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Orlushy Mini Aquarium Heater 50W,Small Fish Tank Heaters with LED Digital Temperature Display and External Temperature Controller for Betta Frogs Newts Turtles (50W)
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Orlushy Mini Aquarium Heater 50W

Small Fish Tank Heaters with LED Digital Temperature Display and External Temperature Controller for Betta Frogs Newts Turtles (50W)

by Nova pet supplies co.LTD
What We like

LED Display Design: LED digital display, External temperature controller,easy to use and Safety.

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Product Features

  • 50W Submersible Aquarium Heater is Suitable for 3-10 Gallon.Temperature range: 65F~93F18C~34C, power cord is 5 FT.
  • The Digital Smart Aquarium Heater is a heater and thermometer combined into one, eliminating the need for more equipment in smaller tanks.
  • Please be sure that the heater needs to be completely sunk into water, horizontal or vertical fixed in the water cycle better place, and let the working light can be seen as clear as possible.
  • Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems

50w submersible aquarium heater is suitable for 3-10 gallon.temperature range: 65f~93f18c~34c, power cord is 5 ft. the digital smart aquarium heater is a heater and thermometer combined into one, eliminating the need for more equipment in smaller tanks. please be sure that the heater needs to be completely sunk into water, horizontal or vertical fixed in the water cycle better place, and let the working light can be seen as clear as possible. applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems

7
9.5
SCORE
Bnzaq Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
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Bnzaq Fish Tank Aquarium Heater

Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W

by Bnzaq
What We like

[ADJUSTABLE TEMPERATURE]Temperature range: 68F~93F.25W heater:suitable for fish tank within 7 gallons,Length:7.8".Easy to adjust temperature by the aquarium heater that suit more species of fish.

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Product Features

  • [NO LONGER CHILL YOUR FISH]Automatically regulate and maintain water temperatureimitate the original ecological environment for your tropical fish.Provided fish with warm water environment.Perfect to apply to fresh and salt water.
  • [AUTOMATIC CONSTANT TEMPERATURE]When water temperature reaches set value,the indicator light will be OFF and the heater will automatically stop heating.The heater will automatically start heating and indicator light will be ON if water temperature is low.You could place heater horizontally or vertically.
  • [ATTENTION]Please place the heater near place (filter or pump) of water flowing to keep more even water temperature.Unplug the heater 30 minutes early when changing the water for the fish tank.
  • [PREMIUM SHATTERPROOF GLASS]Made of shatterproof glass and BPA-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.3 FREE artificial aquarium plants as ornament in your tank.

[no longer chill your fish]automatically regulate and maintain water temperatureimitate the original ecological environment for your tropical fish.provided fish with warm water environment.perfect to apply to fresh and salt water. [automatic constant temperature]when water temperature reaches set value,the indicator light will be off and the heater will automatically stop heating.the heater will automatically start heating and indicator light will be on if water temperature is low.you could place heater horizontally or vertically. [attention]please place the heater near place (filter or pump) of water flowing to keep more even water temperature.unplug the heater 30 minutes early when changing the water for the fish tank. [premium shatterproof glass]made of shatterproof glass and bpa-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.3 free artificial aquarium plants as ornament in your tank.

8
9.3
SCORE
Hydor 7.5w Slim Heater for Bettas and Bowls, 2 to 5 gal
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Hydor 7.5w Slim Heater for Bettas and Bowls

2 to 5 gal

by Hydor USA, Inc.
What We like

Heater is UL listed

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Product Features

  • Plug and Play, No temperature to set
  • Can be positioned under gravel
  • No glass components

No glass components Plug and play, no temperature to set Can be positioned under gravel

9
9.3
SCORE
DaToo 10 Watt Small Aquarium Heater Mini Betta Flat Fish Tank Heater for 1 Gallon 1.5 Gallon
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DaToo 10 Watt Small Aquarium Heater Mini Betta Flat Fish Tank Heater for 1 Gallon 1.5 Gallon

by DaToo
What We like

PTC HEATING & ONLY SUITABLE FOR FRESHWATER - Unlike conventional glass aquarium heaters, PTC has better thermal conductivity and heating rate, no explosion, no breakage. Very energy efficient and environmentally friendly. Your child can operate it easily and is very safe. This mini fish tank heater is only suitable for fresh water tanks.

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Product Features

  • CONSTANT TEMPERATURE & NO NEED TO ADJUST - DaToo 10W MINI Aquarium Heater can automatically maintain a constant temperature between 75F and 82F (depending on the external environment), no need to set. This temperature range is ideal for most tropical fish and is very beneficial for the reproduction of betta and promotes their metabolism. With no extra work, just plug it in and the DaToo 10Watt Small Fish Tank Heater will help your fish stay healthy and comfortable. Great for kids!!
  • 24V SAFE VOLTAGE & POWER OFF AFTER LEAVING WATER - The output voltage of the DaToo Betta Heater is only 24V, which not only ensures the safety of the fish, but also ensures the safety of the user. No need to worry about leakage, you can rest assured to use it for your children. The Betta heater needs to be completely submerged in the water. If it leaves the water, it will automatically stop heating to prevent dry burning (heating indicator is green), which is very safe.
  • PERFECT MINI HEATER FOR 1~1.5 GALLON TANK - For a Betta breeder with a 1 to 1.5 gallon small tank, it is very difficult to choose a suitable heater. Because most of the heaters on the market are too big for this small tank. This not only affects us to watch our beautiful Betta, but also reduces the activity space of the Betta. Now DaToo Mini Aquarium heater can help you solve this problem. Ultra-small and thin size, perfectly hidden in a 1~1.5 gallon tank, your Betta will be happy with it! !

Constant temperature & no need to adjust - DaToo 10w mini aquarium heater can automatically maintain a constant temperature between 75f and 82f (depending on the external environment), no need to set. this temperature range is ideal for most tropical fish and is very beneficial for the reproduction of betta and promotes their metabolism. with no extra work, just plug it in and the DaToo 10watt small fish tank heater will help your fish stay healthy and comfortable. great for kids!! 24v safe voltage & power off after leaving water - the output voltage of the DaToo betta heater is only 24v, which not only ensures the safety of the fish, but also ensures the safety of the user. no need to worry about leakage, you can rest assured to use it for your children. the betta heater needs to be completely submerged in the water. if it leaves the water, it will automatically stop heating to prevent dry burning (heating indicator is green), which is very safe. Perfect mini heater for 1~1.5 gallon tank - for a betta breeder with a 1 to 1.5 gallon small tank, it is very difficult to choose a suitable heater. because most of the heaters on the market are too big for this small tank. this not only affects us to watch our beautiful betta, but also reduces the activity space of the betta. now DaToo mini aquarium heater can help you solve this problem. ultra-small and thin size, perfectly hidden in a 1~1.5 gallon tank, your betta will be happy with it! !

10
9.2
SCORE
Betta Fish Tank Heater, 25W Mini Aquarium Heaters Free 2 Artificial Plants 1 Stick-on Thermometer Strip 2 Suction Cups, Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank
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ZEETOON Betta Fish Tank Heater

25W Mini Aquarium Heaters Free 2 Artificial Plants 1 Stick-on Thermometer Strip 2 Suction Cups, Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank

by ZEETOON
What We like

Mini Sized- Fully submersible compact betta fish heater Gift with 2PCS Aquarium Decor Artificial Plant. Specific perfect for mini aquarium under 5 gal/20L.for all shapes and materials fish tanks, whether it is glass or plastic, all can be used. ZEETOON Mini Heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. intelligent temperature regulate, very easy to use.

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Product Features

  • Betta Fish's Favorite Gifts: ZEETOON Fish Tank Heater Suitable for all kinds of aquarium pets, Betta, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. Your little fishes and turtles will no longer fear the winter! 2 Aquarium Decor Artificial Plants make their homes beautiful not boring. 1 Stick-on Thermometer Strip, Eliminate your worry of not confirming the heating temperature
  • Smart Control: Adopted intelligent circuit board, with a precise sensing probe and thermostat heating system. Unlike other conventional heaters, need you to manually adjust the temperature. Our Smart Aquarium Heater just plug the power cable then it will work. It works will automatically turn on/off to achieve the setting temperature constantly and stably 73F-82F(25-28), Energy-saving life, you will be at your fingertips!
  • High Quality: Made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. This product have certificated by CE, ROHS, FCC, UL certifications. We provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it.
  • Smart Thermostat: ZEETOON Mini Heater different from a manually adjusted heater. Our heater automatic temperature regulate on 73F-82F(25-28) , no need to set. Prevent electric shock and burns. Keep you and your family safe. Position it near a strong water flow for whole aquarium are in the same temperature. The outlet of filter is ideal. When there is a heater in the fish thak, do not put your hand in to the water

Smart control: adopted intelligent circuit board, with a precise sensing probe and thermostat heating system. unlike other conventional heaters, need you to manually adjust the temperature. our smart aquarium heater just plug the power cable then it will work. it works will automatically turn on/off to achieve the setting temperature constantly and stably 73f-82f(25-28), energy-saving life, you will be at your fingertips! Smart thermostat: ZEETOON mini heater different from a manually adjusted heater. our heater automatic temperature regulate on 73f-82f(25-28) , no need to set. prevent electric shock and burns. keep you and your family safe. position it near a strong water flow for whole aquarium are in the same temperature. the outlet of filter is ideal. when there is a heater in the fish thak, do not put your hand in to the water High quality: made by heat resistant abs housing, sandy quartz filler and mch alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. this product have certificated by ce, rohs, fcc, ul certifications. we provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it. Betta fish's favorite gifts: ZEETOON fish tank heater suitable for all kinds of aquarium pets, betta, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. your little fishes and turtles will no longer fear the winter! 2 aquarium decor artificial plants make their homes beautiful not boring. 1 stick-on thermometer strip, eliminate your worry of not confirming the heating temperature

11
9.1
SCORE
Mylivell Aquarium Heater Submersible Auto Thermostat Heater,Fish Tank Water Heater and Adjustable Temperature with Suction Cups and Protective Cover (with case-100W)
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Mylivell Aquarium Heater Submersible Auto Thermostat Heater

Fish Tank Water Heater and Adjustable Temperature with Suction Cups and Protective Cover (with case-100W)

by Mylivell
What We like

Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.

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Product Features

  • Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20~34C(65 F - 93 F), and the display is easy to read.
  • Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.
  • Fully Submersible. Power: 100W. Suggested water volume: 20 gal.
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.

Convenient and safe: our aquarium heater thermostat has two suction cups for attachment to the fish tank. the polarized plug prevents electrical shock. Fully submersible. power: 100w. suggested water volume: 20 gal. High quality: aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation. Adjustable temperature: the temperature of the fish tank heater can be adjusted automatically. temperature setting range: 20~34c(65 f - 93 f), and the display is easy to read.

12
9
SCORE
FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer
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FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer

by FREESEA
What We like

Temperature range: 63F~95F , It is very easy to adjust the temperature you need, we also deliberately give each customer a free diving thermometer, you can observe the water temperature of the fish tank at any time.

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Product Features

  • Intelligent temperature controlAutomatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. Furthermore, Automatic safety shut-off feature, and overheating protection.
  • 50 Watt Heater: This Aquarium heater is suitable for 5 to 15 gallons aquariums, Length - 6.8 inch,voltage 110-120V, power cord is 4.0 ft, please choose the right wattage aquarium heater according to our size chart.
  • Note: 1. Aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,Please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. Heater rod is suitable for people over 16 years of age. Children or minors should be under adult guidance or supervision.

50 watt heater: this aquarium heater is suitable for 5 to 15 gallons aquariums, length - 6.8 inch,voltage 110-120v, power cord is 4.0 ft, please choose the right wattage aquarium heater according to our size chart. Note: 1. aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. heater rod is suitable for people over 16 years of age. children or minors should be under adult guidance or supervision. Intelligent temperature controlautomatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. furthermore, automatic safety shut-off feature, and overheating protection.

13
8.9
SCORE
LEDGLE Submersible Aquarium Heater with Thermometer, Fish Tank Heater for 3 to 5 Gallon Betta Tank, Saltwater or Freshwater Aquariums, Turtle, Auto Intelligent LED Digital Display
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LEDGLE Submersible Aquarium Heater with Thermometer

Fish Tank Heater for 3 to 5 Gallon Betta Tank, Saltwater or Freshwater Aquariums, Turtle, Auto Intelligent LED Digital Display

by LEDGLE
What We like

Widely Used: Anti-explosion and 1P68 Waterproof, small thermostat creates ideal warm water conditions for your fishes to thrive in, especially apply to all kinds of tropical freshwater fish, turtles, etc.

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Product Features

  • Simple Installation: With 2 suction cups at the bottom, the aquarium tank heater can easily adsorb on fish tank. To make the tank temperature go more uniformity,please make the heater installed near the water outlet or inlet. The heater must be 100% immersed in water. Please unplug the power when cleaning the fish tank or changing the aquarium.
  • Come with Diving Thermometer: Much safer to observe the water temperature of the fish tank at any time. and are available. Much safer if the temperature of the fish tank can be monitored at any time.
  • Compact & Portable Heater: 5.3x1x0.7in. Fast heating, smart thermostat is designed for 3 to gallon betta fish tank and takes up a small space.
  • Automatic Constant Temperature: Automatically maintains the temperature around 25-28. The aquarium heater starts heating when lower than 23.

Simple installation: with 2 suction cups at the bottom, the aquarium tank heater can easily adsorb on fish tank. to make the tank temperature go more uniformity,please make the heater installed near the water outlet or inlet. the heater must be 100% immersed in water. please unplug the power when cleaning the fish tank or changing the aquarium. Compact & portable heater: 5.3x1x0.7in. fast heating, smart thermostat is designed for 3 to gallon betta fish tank and takes up a small space. Come with diving thermometer: much safer to observe the water temperature of the fish tank at any time. and are available. much safer if the temperature of the fish tank can be monitored at any time. Automatic constant temperature: automatically maintains the temperature around 25-28. the aquarium heater starts heating when lower than 23.

14
8.8
SCORE
SZELAM 25W Smart Mini Aquarium Heater,Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller-2 Artificial Plants Include
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SZELAM 25W Smart Mini Aquarium Heater

Betta Fish Tank Heater Thermostat Warmer Submersible Anti-Explosion/Energy-efficient Water Temp Controller-2 Artificial Plants Include

by SZELAM
What We like

Mini Sized- Fully submersible compact betta fish heater Gift with 2PCS Aquarium Decor Artificial Plant. Specific perfect for mini aquarium under 5 gal/20L. SZELAM Mini Heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water.

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Product Features

  • Quality Assurance- This product have certificated by CE, ROHS, FCC certifications. We provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it.
  • High Quality- Made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use.
  • Smart Control- Adopted intelligent circuit board, with a precise temperature sensing probe and constant temperature heating system. No thermometer required, no more operations: Unlike other conventional heaters, need you to manually adjust the temperature. Our Smart Aquarium Heater just plug the power cable then it will work. It works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient.
  • Easier to Use- SZELAM Mini Heater different from a manually adjusted heater. Our heater automatic temperature regulate on 73F-82F(25-28) , no need to set. Prevent electric shock and burns. Keep you and your family safe. Position it near a strong water flow for whole aquarium are in the same temperature. The outlet of filter is ideal.

Easier to use- SZELAM mini heater different from a manually adjusted heater. our heater automatic temperature regulate on 73f-82f(25-28) , no need to set. prevent electric shock and burns. keep you and your family safe. position it near a strong water flow for whole aquarium are in the same temperature. the outlet of filter is ideal. Quality assurance- this product have certificated by ce, rohs, fcc certifications. we provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it. High quality- made by heat resistant abs housing, sandy quartz filler and mch alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. Smart control- adopted intelligent circuit board, with a precise temperature sensing probe and constant temperature heating system. no thermometer required, no more operations: unlike other conventional heaters, need you to manually adjust the temperature. our smart aquarium heater just plug the power cable then it will work. it works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably, energy-efficient.

15
8.6
SCORE
Marina Submersible Aquarium Heater, Betta Fish Tank Heater, 25-Watt, 11230
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Marina Submersible Aquarium Heater

Betta Fish Tank Heater, 25-Watt, 11230

by Marina
What We like

Includes bracket with suction cups for easy, secure installation

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Product Features

  • Easy to read temperature settings
  • Bumper guard to protect fish
  • Impact-resistant glass design; waterproof sealing
  • 25-Watt submersible heater for freshwater or saltwater aquariums

Impact-resistant glass design; waterproof sealing Bumper guard to protect fish 25-watt submersible heater for freshwater or saltwater aquariums Easy to read temperature settings

16
8.6
SCORE
AQQA 15W 25W 35W Aquarium Mini Submersible Heater for Small Fish Tank (15W for 0-2 Gallon Tank)
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AQQA 15W 25W 35W Aquarium Mini Submersible Heater for Small Fish Tank (15W for 0-2 Gallon Tank)

by AQQA
What We like

EASY INSTALLATION: Easy and quick installation, submersible fish tank heater, vertical or horizontal placement using attached 2 suction cups. NOTE: Please make sure that the heater is completely submerged in the water before turning on the power, and install it near the water flowing area to prevent uneven heating

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Product Features

  • TRIPLE SECURITY PROTECTION: When the heater exposed to air and is not fully submerged, then the red light flashes quickly and shut off automatically. When the temperature exceeds 97(36), the green light flashes quickly, the heater will shut off automatically. Sensor open-circuited, red and green lights flash alternately, stop working
  • SAFE& DURABLE: Mini fish tank heaters made of high quality flameresistance, double seal material, providing explosion-proof, shatterproof, IP68 waterproof, much safer for human and your lovely fishes, your pets will no longer fear the winter
  • INTELLIGENT AUTOMATIC HEATING: Automatic constant temperature function, intelligent constant temperature controller. If your heater is working properly, the red light will be constant on. When the temperature is reached 79(26), it will stop work, the green light will be constant on

Triple security protection: when the heater exposed to air and is not fully submerged, then the red light flashes quickly and shut off automatically. when the temperature exceeds 97(36), the green light flashes quickly, the heater will shut off automatically. sensor open-circuited, red and green lights flash alternately, stop working Safe& durable: mini fish tank heaters made of high quality flameresistance, double seal material, providing explosion-proof, shatterproof, ip68 waterproof, much safer for human and your lovely fishes, your pets will no longer fear the winter Intelligent automatic heating: automatic constant temperature function, intelligent constant temperature controller. if your heater is working properly, the red light will be constant on. when the temperature is reached 79(26), it will stop work, the green light will be constant on

17
8.5
SCORE
PGFUNNY 50W Aquarium Heater, Adjustable LED Digital Temperature Display Smart Thermostat Betta Fish Heater, for Betta Tank Heater with Protective Guard
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PGFUNNY 50W Aquarium Heater

Adjustable LED Digital Temperature Display Smart Thermostat Betta Fish Heater, for Betta Tank Heater with Protective Guard

by PGFUNNY
What We like

CE Certification: The aquarium thermometer made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, keep your fish from scalding.This product have certificated by CE, ROHS, FCC certifications.

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Product Features

  • Suitable for aquarium pets: Betta Heater Suitable for all kinds of aquarium pets, betta fish, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. All shapes and materials betta tank, whether it is glass or plastic, all can be used.
  • Digital DisplayWith led display on the midle of the heater front side, Long press on fish tank heater switch to switch between Fahrenheit / Celsius display. External temperature setting avoids getting hands wet, digital LED display shows real time water temperature. Heating temperature range from 68 to 94F.
  • Fully Automatic Temperature Control ChipHeater for betta fish have a automatic thermostat function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
  • Water shortage protectionDuring its heating time, the small aquarium heater must be 100% submerged into the water. This heater automatically shut itself off once it remove from water which ensures the safety of your pet fish.when fully in water again it will return to normal work again

Digital displaywith led display on the midle of the heater front side, long press on fish tank heater switch to switch between fahrenheit / celsius display. external temperature setting avoids getting hands wet, digital led display shows real time water temperature. heating temperature range from 68 to 94f. Suitable for aquarium pets: betta heater suitable for all kinds of aquarium pets, betta fish, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. all shapes and materials betta tank, whether it is glass or plastic, all can be used. Water shortage protectionduring its heating time, the small aquarium heater must be 100% submerged into the water. this heater automatically shut itself off once it remove from water which ensures the safety of your pet fish.when fully in water again it will return to normal work again Fully automatic temperature control chipheater for betta fish have a automatic thermostat function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.

18
8.5
SCORE
hygger Mini Betta Fish Heater for Small Fish Bowl 25W Aquarium Heater with LED Digital Display 2-4 Gallon Tank 68°F to 94°F
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hygger Mini Betta Fish Heater for Small Fish Bowl 25W Aquarium Heater with LED Digital Display 2-4 Gallon Tank 68°F to 94°F

by hygger
What We like

Build-in thermostat on the cord, this small fish heater can be easily adjusted temperature without getting your hands wet. The precision temperature control allows you to set the temperature between 68 and 94 degrees F in 2-degree increments

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Product Features

  • Betta Heater auto shut off when over-heats temperature over 97 degree Fahrenheit and flashing error code "E2". The nylon integrated fish guard prevents fish from scald and punching. Carbon heating element is more stable and safer than tranditional coil material
  • Fully-submersible heater by Hygger is easy to install with included suction cups and slim profile, super tiny size just measures 3.5 in x 2 in x 0.8 in, can easily be wedged in a corner, great for small or partially filled tank
  • Bright, clear LCD display that shows real-time water temperature over guesswork is a big bonous, display in either Celsius or Fahrenheit, depending on your choice. Red indicator light indicates the heater is working and turns into blue once it reach to desired temperature
  • 25 watt aquarium heater is ideal for 2-4 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle tank

25 watt aquarium heater is ideal for 2-4 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle tank Fully-submersible heater by hygger is easy to install with included suction cups and slim profile, super tiny size just measures 3.5 in x 2 in x 0.8 in, can easily be wedged in a corner, great for small or partially filled tank Bright, clear lcd display that shows real-time water temperature over guesswork is a big bonous, display in either celsius or fahrenheit, depending on your choice. red indicator light indicates the heater is working and turns into blue once it reach to desired temperature Betta heater auto shut off when over-heats temperature over 97 degree fahrenheit and flashing error code "e2". the nylon integrated fish guard prevents fish from scald and punching. carbon heating element is more stable and safer than tranditional coil material

19
8.4
SCORE
10W Betta Heater, for Small Tanks (1.5 gal.), Fully Submersible Aquarium Heater, Automatically Reaches Preset Temperature, Energy-efficient Heating Module, Suction Cups for Easy Installation
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SunGrow 10W Betta Heater

for Small Tanks (1.5 gal.), Fully Submersible Aquarium Heater, Automatically Reaches Preset Temperature, Energy-efficient Heating Module, Suction Cups for Easy Installation

by Luffy Pets Collection
What We like

CREATES THE IDEAL CONDITIONS FOR YOUR BETTA FISH --- Betta are tropical fish. That means they need warmer water to live in. This heater will create the ideal conditions for your betta fish to thrive in. The warm water will keep your betta fish calm and happy and make their metabolic process efficient. A few preconditions are required to allow it to run with maximum efficiency. The heater must be completely submerged in the water and the indoor temperature should be 62-75Fahrenheit.

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Product Features

  • FULLY SUBMERSIBLE 100% WATERPROOF HEATER--- This 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. Its exterior is designed with tougher than glass and the sealed polymer can be submerged into your tank. The heating element is surrounded by a thick plastic to ensure 100% protection of your fish. It is also explosion-proof, Shatterproof, durable and has an anti-scald surface. It has a non-corrosive shell for strength which makes it nearly indestructible.
  • ENSURE YOUR BETTA FISH GROW AND THRIVE --- It is absolutely essential that your aquaria should be heated between 75 and 77F for optimal comfort and metabolic efficiency of your betta fish. Any temperature below 70F will cause your bettas to enter a state of minimal activity and they will be stressed and miserable. Make sure Betta are at their optimal health and performance with this heater.
  • INCLUDES SUCTION CUPS FOR EASY INSTALLATION ---- Easily install the SunGrow Betta Heater vertically or horizontally by using the built-in suction cups to attach to your tank. The best location to place the heater is in the stream of a powerhead or near the water flow, such as the outlet (or inlet) from the filter. This way the heat is evenly distributed throughout your tank.
  • AUTOMATICALLY REACHES THE PERFECT PRESET TEMPERATURE --- The smart Betta heater by SunGrow has a built-in electronic thermostat to automatically maintain water around 75F which is ideal for most tropical fish. It saves you from the trouble of constantly keeping a check on the temperature of your tank. It will automatically shut down when it will reach around the desired temperature, no manual adjustment is needed. This ensures that the temperature is not too high for your fish.

fully submersible 100% waterproof heater--- this 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. its exterior is designed with tougher than glass and the sealed polymer can be submerged into your tank. the heating element is surrounded by a thick plastic to ensure 100% protection of your fish. it is also explosion-proof, shatterproof, durable and has an anti-scald surface. it has a non-corrosive shell for strength which makes it nearly indestructible. includes suction cups for easy installation ---- easily install the sungrow betta heater vertically or horizontally by using the built-in suction cups to attach to your tank. the best location to place the heater is in the stream of a powerhead or near the water flow, such as the outlet (or inlet) from the filter. this way the heat is evenly distributed throughout your tank. ensure your betta fish grow and thrive --- it is absolutely essential that your aquaria should be heated between 75 and 77f for optimal comfort and metabolic efficiency of your betta fish. any temperature below 70f will cause your bettas to enter a state of minimal activity and they will be stressed and miserable. make sure betta are at their optimal health and performance with this heater. automatically reaches the perfect preset temperature --- the smart betta heater by sungrow has a built-in electronic thermostat to automatically maintain water around 75f which is ideal for most tropical fish. it saves you from the trouble of constantly keeping a check on the temperature of your tank. it will automatically shut down when it will reach around the desired temperature, no manual adjustment is needed. this ensures that the temperature is not too high for your fish.

20
8.1
SCORE
DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
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DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

by DaToo
What We like

25W Betta Aquarium Heater -- Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish

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Product Features

  • Precise And Constant Temperature -- No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78, the heater starts to heat and the red light is on. When the temperature reaches 78, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
  • Safe And Durable -- Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
  • The Smallest 25W Betta Heater -- For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. Very MINI!!

Precise and constant temperature -- no need to set, DaToo fish tank heater will automatically keep the water temperature of the fish habitat at 78. this temperature is very suitable for betta and most tropical fish. when the water temperature is lower than 78, the heater starts to heat and the red light is on. when the temperature reaches 78, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish! The smallest 25w betta heater -- for most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. this is the smallest 25w aquarium heater on the market, only 0.2 inches. no matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. very mini!! Safe and durable -- unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.

21
8
SCORE
Aqueon Fish Tank Mini Heater, 10-watt, Plastic
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Aqueon Fish Tank Mini Heater

10-watt, Plastic

by Central Garden & Pet
What We like

Features thermal safety shut-off

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Product Features

  • Perfect size heater for Aqeuon Mini Bows and other small aquariums
  • Ideal for desktop fish tank aquariums up to 5 gallons
  • Aquarium heater is shatterproof

Perfect size heater for aqeuon mini bows and other small aquariums Ideal for desktop fish tank aquariums up to 5 gallons Aquarium heater is shatterproof

22
7.4
SCORE
SunGrow Betta Plakat Heater, 10-Watt Submersible Aquarium Water Heater for Small Tanks (1.5-Gallons), with Preset Temperature Capability, Suction Cups Included
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SunGrow Betta Plakat Heater

10-Watt Submersible Aquarium Water Heater for Small Tanks (1.5-Gallons), with Preset Temperature Capability, Suction Cups Included

by Luffy Pets Collection
What We like

SUCTION CUPS INCLUDED FOR EASY INSTALLATION ---- Easily install the SunGrow Heater vertically or horizontally by using the built-in suction cups to attach to your tank. The best location to place the heater is in the stream of a powerhead or near the water flow, such as the outlet (or inlet) from the filter. This way the heat is evenly distributed throughout your tank.

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Product Features

  • CREATES THE IDEAL CONDITIONS FOR FLORA AND FAUNA --- The eastern Asian fish species can survive in a freshwater environment. This heater by SunGrow will create ideal conditions for them. A few preconditions are required to allow it to run with maximum efficiency. The heater must be completely submerged in the water and the indoor temperature should be around 62-74F.
  • FULLY SUBMERSIBLE WATER HEATER--- This 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. Its exterior is designed with tougher than glass and the sealed polymer can be submerged into your tank. The heating element is surrounded by a thick plastic to ensure the protection of these caudal-finned betta fish.
  • KEEP YOUR BETTA HEALTHY --- To ensure that your betta has optimal health, you need to provide her with warm water. The water in the tank should not go below 74F for optimal comfort and metabolic efficiency of your crown tail betta. The cold temperature for this gourami family fish will make her lethargic, stressed, and miserable.
  • AUTOMATICALLY REACHES THE PRESET TEMPERATURE --- The smart SunGrow heater for this freshwater fish has a built-in electronic thermostat to automatically maintain water around 72F which is ideal for most tropical fish. It saves you from the trouble of constantly keeping a check on the temperature of your tank. It will automatically shut down when it will reach the desired temperature, no manual adjustment is needed.

fully submersible water heater--- this 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. its exterior is designed with tougher than glass and the sealed polymer can be submerged into your tank. the heating element is surrounded by a thick plastic to ensure the protection of these caudal-finned betta fish. creates the ideal conditions for flora and fauna --- the eastern asian fish species can survive in a freshwater environment. this heater by sungrow will create ideal conditions for them. a few preconditions are required to allow it to run with maximum efficiency. the heater must be completely submerged in the water and the indoor temperature should be around 62-74f. keep your betta healthy --- to ensure that your betta has optimal health, you need to provide her with warm water. the water in the tank should not go below 74f for optimal comfort and metabolic efficiency of your crown tail betta. the cold temperature for this gourami family fish will make her lethargic, stressed, and miserable. automatically reaches the preset temperature --- the smart sungrow heater for this freshwater fish has a built-in electronic thermostat to automatically maintain water around 72f which is ideal for most tropical fish. it saves you from the trouble of constantly keeping a check on the temperature of your tank. it will automatically shut down when it will reach the desired temperature, no manual adjustment is needed.

23
7.3
SCORE
Hygger Mini Glass Aquarium Heater Adjustable LED Digital Temperature Display Small Tank Heater for Turtle Betta Fish Bowl with Protective Guard 50W
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Hygger Mini Glass Aquarium Heater Adjustable LED Digital Temperature Display Small Tank Heater for Turtle Betta Fish Bowl with Protective Guard 50W

by hygger
What We like

For Fish Tank 1-6.5 Gallon50 watt aquarium heater is ideal for small fish bowls and aquariums 1 to 6.5 gallons; voltage/frequency: 110 120volt/60hertz; it is ideal for betta fish and turtle tank

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Product Features

  • Run Dry ProtectionThis egg-shaped small aquarium heater automatically shut itself off once it remove from water which ensures the safety of your pet, especially turtle and frog
  • Easy to Read LED DisplayExternal temperature setting control avoids getting hands wet, digital LED display shows real time water temperature. Heating temperature range from 63 to 94F. Control accuracy is +/- 1F.
  • Protective GuardMade of high quality quartz glass, waterproof double seal material, covered with protective case, shatter-resistant construction, this fish tank heater keep your fish from scalding and punching
  • Automated Shut Off SystemOnce set the desired temperature, this fully submersible heater lights on red indicates that it is heating. It will auto shut off once it reach set temperature

Run dry protectionthis egg-shaped small aquarium heater automatically shut itself off once it remove from water which ensures the safety of your pet, especially turtle and frog Automated shut off systemonce set the desired temperature, this fully submersible heater lights on red indicates that it is heating. it will auto shut off once it reach set temperature Protective guardmade of high quality quartz glass, waterproof double seal material, covered with protective case, shatter-resistant construction, this fish tank heater keep your fish from scalding and punching Easy to read led displayexternal temperature setting control avoids getting hands wet, digital led display shows real time water temperature. heating temperature range from 63 to 94f. control accuracy is +/- 1f.

24
7.3
SCORE
BOEESPAT Smart Betta Fish Tank Heater 20W Mini Fish Tank Heater with Electronic Thermostat
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BOEESPAT Smart Betta Fish Tank Heater 20W Mini Fish Tank Heater with Electronic Thermostat

by BOEESPAT
What We like

MINI SIZE Batte HEATER: 4.4*1.57*0.39 Inch small size can easy to hide in your aquarium, your Batte will swimming freely at a comfortable temperature.

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Product Features

  • SMART CONSTAND AQUARIUM HEATER: Built-in thermostat make BOEESPAT heater much smarter then your old one, keeping the temperature of your aquarium between 77F and 82F (25C to 28C). Different from your old heater, there is no need to set temperature, it can automitically turn on once temperature is lower than 77F, and turn off again once it reach to 82F.
  • MUST HAVE FOR AQUARIUM 2 GALLONS: 20W Fish Tank Heater is suitable for 2 gallons and can be used in mini fish tanks and aquariums.
  • MUCH SAFER FOR BETTA: 12V safe working Voltage different from other heaters' at 110V, can protect your Betta better. What's more, the heater can work even there is no water, much stable than others.
  • EXTRA PROTECT: If your aquarium has no enough water, the heater can still work, to protect other electronic device, the heater will automicially turn off once the heater reach to 125, free to use.

Much safer for betta: 12v safe working voltage different from other heaters' at 110v, can protect your betta better. what's more, the heater can work even there is no water, much stable than others. Extra protect: if your aquarium has no enough water, the heater can still work, to protect other electronic device, the heater will automicially turn off once the heater reach to 125, free to use. Must have for aquarium 2 gallons: 20w fish tank heater is suitable for 2 gallons and can be used in mini fish tanks and aquariums. Smart constand aquarium heater: built-in thermostat make BOEESPAT heater much smarter then your old one, keeping the temperature of your aquarium between 77f and 82f (25c to 28c). different from your old heater, there is no need to set temperature, it can automitically turn on once temperature is lower than 77f, and turn off again once it reach to 82f.

25
7.1
SCORE
DIAPIN Aquarium Heater, Mini Betta Heater Adjustable LED Digital Temperature Display Fish Tank Heater for Turtle Betta Fish Water Heater with Protective Guard
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DIAPIN Aquarium Heater

Mini Betta Heater Adjustable LED Digital Temperature Display Fish Tank Heater for Turtle Betta Fish Water Heater with Protective Guard

by SUR-SOUL
What We like

Durable Aquarium Heater - This aquarium heater is made of premium thickened Quartz Glass, double seal material, advanced design to ensure safe operation. It has explosion-proof function while being also shatterproof and waterproof.

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Product Features

  • Suitable capacity - 50 watt aquarium heater is ideal for 6-9 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle tank.
  • Functional safety - Automatically shut off will be activated if heater is no longer properly submerged, preventing damage
  • Best Choice - Ideal for freshwater and saltwater aquariums, aquaculture, glass containers, and hydroponic systems
  • Wide Temperature Range - The temperature of the heater can be adjusted between 20-34, 68-94F. It is suitable for fresh or sea water and great for many kinds of aquariums, fishes and amphibious turtles.

Best choice - ideal for freshwater and saltwater aquariums, aquaculture, glass containers, and hydroponic systems Functional safety - automatically shut off will be activated if heater is no longer properly submerged, preventing damage Suitable capacity - 50 watt aquarium heater is ideal for 6-9 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle tank. Wide temperature range - the temperature of the heater can be adjusted between 20-34, 68-94f. it is suitable for fresh or sea water and great for many kinds of aquariums, fishes and amphibious turtles.

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