25 Best 5 Watt Aquarium Heaters
for March 2021

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.9
SCORE
FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer

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.

more infoarrow_drop_down

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.

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. 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.

2
9.8
SCORE
PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip

Under 6 Gallon Fish Tanks

by PULACO
What We like

Quick and Easy Installation:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78, no need to adjust temperature, easy to operate, fishes happy.

more infoarrow_drop_down

Product Features

  • Betta HeaterThis Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.
  • How it Works: Plug in, red light turns on, the heater will start working until water temperature up to 78F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78F. Accuracy3F
  • Note: Do not operate or leave product plugged in when it is outside of water, Children should be use this heater under adult's guidance.

How it works: plug in, red light turns on, the heater will start working until water temperature up to 78f, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78f. accuracy3f Betta heaterthis fish tank heater should be 100% submerged into water, ideal for small glass or acrylic desktop aquariums up 1 to 6 gallons, not suitable for less than 1 gallon tank. Note: do not operate or leave product plugged in when it is outside of water, children should be use this heater under adult's guidance.

3
9.7
SCORE
DaToo 10 Watt Small Aquarium Heater Mini Betta Flat Fish Tank Heater for 1 Gallon 1.5 Gallon

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.

more infoarrow_drop_down

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! !

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.

4
9.6
SCORE
Marina Submersible Aquarium Heater, Betta Fish Tank Heater, 25-Watt, 11230

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

more infoarrow_drop_down

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

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

5
9.6
SCORE
DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

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

more infoarrow_drop_down

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!!

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. 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!

6
9.5
SCORE
SunGrow Betta Plakat Heater, 10-Watt Submersible Aquarium Water Heater for Small Tanks (1.5-Gallons), with Preset Temperature Capability, Suction Cups Included

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.

more infoarrow_drop_down

Product Features

  • 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.
  • 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.
  • 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.

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. 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.

7
9.5
SCORE
Mylivell Aquarium Heater Submersible Auto Thermostat Heater,Fish Tank Water Heater and Adjustable Temperature with Suction Cup-50W

Mylivell Aquarium Heater Submersible Auto Thermostat Heater

Fish Tank Water Heater and Adjustable Temperature with Suction Cup-50W

by Mylivell
What We like

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

more infoarrow_drop_down

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: 50W. Suggested water volume: 20gal.
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.

High quality: aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation. Fully submersible. power: 50w. suggested water volume: 20gal. 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.

8
9.5
SCORE
VIBIRIT Aquarium Heater,Betta Fish Tank Heater 25W Smart Small Aquarium Heater,Energy Efficient Submersible Thermostat + Thermometer Sticker

VIBIRIT Aquarium Heater

Betta Fish Tank Heater 25W Smart Small Aquarium Heater, Energy Efficient Submersible Thermostat + Thermometer Sticker

by VIBIRIT
What We like

25W Fish Tank Heater is suitable for 3 to 5 gallons and can be used in mini fish tanks and aquariums. The super-designed suction cups hold the heater tightly in the aquarium. Easy to hide in the water tank.

more infoarrow_drop_down

Product Features

  • Advanced Materials: sturdy engineering plastic. It has anti-explosion, anti-scalding function, high temperature resistance and high safety. Suitable for aquarium pets such as turtles and fry. Length - 5.35 inch, Width - 0.9inch, Thickness - 0.63inch.
  • Included Temperature Sticker: You can attach the temperature sticker to the surface of the water tank(don't put in the water), through which you can monitor. The easy-to-recognize blue color indicates the current temperature of your aquarium water. Temperature bar is for reference only
  • Parameters and Quality Assurance: working power 25w, frequency: 50/60Hz, voltage: 110-120V, waterproof rating IP68. This product aquarium heater has passed CE, ROHS, FCC certification. Explosion-proof, waterproof, anti-scalding, high temperature and other safe operation.
  • Fully Automatic Temperature Control Chip:VIBIRIT submersible aquarium heater automatically adjusts the temperature between 75F and 82F (24C to 28C). It is different from the traditional manual adjustment of the aquarium heater and does not need to be set. And will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient.

Included temperature sticker: you can attach the temperature sticker to the surface of the water tank(don't put in the water), through which you can monitor. the easy-to-recognize blue color indicates the current temperature of your aquarium water. temperature bar is for reference only Fully automatic temperature control chip:VIBIRIT submersible aquarium heater automatically adjusts the temperature between 75f and 82f (24c to 28c). it is different from the traditional manual adjustment of the aquarium heater and does not need to be set. and will automatically turn on/off to achieve the setting temperature constantly and stably, energy-efficient. Parameters and quality assurance: working power 25w, frequency: 50/60hz, voltage: 110-120v, waterproof rating ip68. this product aquarium heater has passed ce, rohs, fcc certification. explosion-proof, waterproof, anti-scalding, high temperature and other safe operation. Advanced materials: sturdy engineering plastic. it has anti-explosion, anti-scalding function, high temperature resistance and high safety. suitable for aquarium pets such as turtles and fry. length - 5.35 inch, width - 0.9inch, thickness - 0.63inch.

9
9.4
SCORE
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display

FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display

by Guang Zhou City Freesea Industrial Co.,Ltd
What We like

Touch button, cyclic adjust temperature , easy to use and Safety.

more infoarrow_drop_down

Product Features

  • Note:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • Automatic 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.
  • Temperature range: 59F~94F, display Fahrenheit F, this heater is designed for1~10 gallons tank.

automatic 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. Note:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water. temperature range: 59f~94f, display fahrenheit f, this heater is designed for1~10 gallons tank.

10
9.4
SCORE
HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W)

HITOP 25W 50W Adjustable Aquarium Heater

Submersible Fish Tank Heater Thermostat with Suction Cup (50W)

by Haisen
What We like

Quick and easy installation, submersible fish tank heater, vertical or horizontal placement using suction cups. 1 extra powerful suction cups as your backup (total 3).

more infoarrow_drop_down

Product Features

  • Automatic Constant Temperature Function: this fish heater, adjustable temperature 68 ~ 93 F, will shut off automatically when the temperature is reached, no extra adjustment is required.
  • Thickened Glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes, your pets will no longer fear the winter.
  • 50W aquarium heater, length 7.8-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 20 Gallons.
  • Bonus a stick-on thermometer, no need to buy another thermometer, 24-Hour Professional After-sales Service.

automatic constant temperature function: this fish heater, adjustable temperature 68 ~ 93 f, will shut off automatically when the temperature is reached, no extra adjustment is required. bonus a stick-on thermometer, no need to buy another thermometer, 24-hour professional after-sales service. 50w aquarium heater, length 7.8-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 20 gallons. thickened glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes, your pets will no longer fear the winter.

11
9.1
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

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

more infoarrow_drop_down

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
  • 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
  • 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

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 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 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

12
9
SCORE
Aqueon Aquatic Flat Heaters 5 Watts

Aqueon Aquatic Flat Heaters 5 Watts

by Central Garden & Pet
What We like

Quick and easy installation

more infoarrow_drop_down

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
  • 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

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

13
8.9
SCORE
Marina Betta Fish Submersible Heater for Fish Tank Aquarium, 1.5 gallons, 11182

AquaClear Marina Betta Fish Submersible Heater for Fish Tank Aquarium

1.5 gallons, 11182

by Marina
What We like

Automatically reaches set temperature; allowing you to easily maintain your fish aquarium

more infoarrow_drop_down

Product Features

  • Made of durable polymer, which is tougher than glass
  • Creates ideal conditions for bettas to live in
  • Use in combination with the Marina Standing Thermometer (sold separately) for accurate temperature readings
  • Easy to install in your betta fish tank; use the suction cups to place on the side of the betta tank
  • 8-watt submersible fish tank heater for aquariums up to 1.5 gallons (5 L)

8-watt submersible fish tank heater for aquariums up to 1.5 gallons (5 l) Use in combination with the Marina standing thermometer (sold separately) for accurate temperature readings Easy to install in your betta fish tank; use the suction cups to place on the side of the betta tank Creates ideal conditions for bettas to live in Made of durable polymer, which is tougher than glass

14
8.9
SCORE
PULACO 25W Mini Aquarium Heater, Betta Fish Tank Heater for 1-5 Gallon Small Fish Tanks

PULACO 25W Mini Aquarium Heater

Betta Fish Tank Heater for 1-5 Gallon Small Fish Tanks

by PULACO
What We like

Easy to operate: This heater is different from traditional heaters. It is designed with an external controller for temperature display and temperature adjustment, which can freely adjust the temperature you need (68F-93F).

more infoarrow_drop_down

Product Features

  • Intelligent temperature control: The heater effectively maintains the temperature you preset before, and stops heating when the water temperature reaches the preset temperature, and restarts heating when the water temperature is lower than the preset temperature by 2-3F.The red light on the LED screen indicates that the heater is heating, and the blue light indicates that the heater has finished heating and is in a constant temperature state.
  • Quartz glass heater: The heating device is made of heat-resistant quartz glass, explosion-proof and strong thermal conductivity. It can be used for 1-5 gallon glass or acrylic fish tanks.
  • Note: The heater needs to be fully submerged, the external controller is not waterproof, and children need to be used under the supervision or guidance of adults.

Quartz glass heater: the heating device is made of heat-resistant quartz glass, explosion-proof and strong thermal conductivity. it can be used for 1-5 gallon glass or acrylic fish tanks. Intelligent temperature control: the heater effectively maintains the temperature you preset before, and stops heating when the water temperature reaches the preset temperature, and restarts heating when the water temperature is lower than the preset temperature by 2-3f.the red light on the led screen indicates that the heater is heating, and the blue light indicates that the heater has finished heating and is in a constant temperature state. Note: the heater needs to be fully submerged, the external controller is not waterproof, and children need to be used under the supervision or guidance of adults.

15
8.8
SCORE
hygger Mini Betta Tank Heater for Small Fish Bowl 50W Aquarium Heater with LED Digital Display 6-9 Gallon Tank 68°F to 94°F

hygger Mini Betta Tank Heater for Small Fish Bowl 50W Aquarium Heater with LED Digital Display 6-9 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

more infoarrow_drop_down

Product Features

  • 50 watt aquarium heater is ideal for 6-9 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle 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
  • 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
  • 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

50 watt aquarium heater is ideal for 6-9 gallon fish bowls, small freshwater and saltwater aquariums, betta tank, snail tank and turtle 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 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 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

16
8.8
SCORE
VIVOSUN Submersible Aquarium Heater 50W Mini Fish Tank Heaters with Intelligent LED Temperature Display and External Temperature Controller

VIVOSUN Submersible Aquarium Heater 50W Mini Fish Tank Heaters with Intelligent LED Temperature Display and External Temperature Controller

by VIVOSUN
What We like

EXTERNAL TEMPERATURE CONTROLLER: The touch-button controller adjusts the temperature without getting your hands wet. Its easy to control the temp from 68/20C to 94/34C; Check the size chart to find your desired fish tank heater

more infoarrow_drop_down

Product Features

  • THERMOSTAT HEATING SYSTEM: The VIVOSUN aquarium heater can control water temperature up to your desired temp value and will automatically control the water temp as needed; Your fish, turtles, frogs, or other little pets will spend a warm winter with this aquarium heater
  • LOW WATER LEVEL HEATING: This product is 1.2 thick, which means it can operate in water levels of the same height; Its perfect for 3 to 5 gallon tanks, but also works with much bigger aquariums; Be sure to match the power to the aquarium dimensions
  • MINIATURIZED WITH GREAT EFFECT: With a size of 12.5 (H) x 6.5 (W) this aquarium heater is compact and wont take up much space and is easy to hide; Whether your tank is 3 gallons or 60 gallons, youll find a use for VIVOSUNs aquarium heater

Low water level heating: this product is 1.2 thick, which means it can operate in water levels of the same height; its perfect for 3 to 5 gallon tanks, but also works with much bigger aquariums; be sure to match the power to the aquarium dimensions Thermostat heating system: the VIVOSUN aquarium heater can control water temperature up to your desired temp value and will automatically control the water temp as needed; your fish, turtles, frogs, or other little pets will spend a warm winter with this aquarium heater Miniaturized with great effect: with a size of 12.5 (h) x 6.5 (w) this aquarium heater is compact and wont take up much space and is easy to hide; whether your tank is 3 gallons or 60 gallons, youll find a use for VIVOSUNs aquarium heater

17
8.7
SCORE
Orlushy Mini Aquarium Heater 50W,Small Fish Tank Heaters with LED Digital Temperature Display and External Temperature Controller for Betta Frogs Newts Turtles (50W)

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.

more infoarrow_drop_down

Product Features

  • 50W Submersible Aquarium Heater is Suitable for 3-10 Gallon.Temperature range: 65F~93F18C~34C, power cord is 5 FT.
  • Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems
  • 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.
  • The Digital Smart Aquarium Heater is a heater and thermometer combined into one, eliminating the need for more equipment in smaller tanks.

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. applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems 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.

18
8.7
SCORE
boxtech Aquarium Heater 50W, Submersible Fish Tank Thermostat Proof Explosion and Auto Digital Control, with Heat-Resistant Quartz Made for 5-15 Gallon

boxtech Aquarium Heater 50W

Submersible Fish Tank Thermostat Proof Explosion and Auto Digital Control, with Heat-Resistant Quartz Made for 5-15 Gallon

by BOXTECH
What We like

Fully Automatic Control: Design with External Temperature Controller, Temperature Range is 68 F-90 F, when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating

more infoarrow_drop_down

Product Features

  • Correct installation: Stick the heater vertical onto the tank side near the water intake or on the way of water flow.This way the heater can quickly sense the water temperature and make adjustments automatically, Keep the aquarium heater fully submerged in water
  • Notice Please: Before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater and regularly clean the scale on the heater
  • Quartz Tube Safety Protection: Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevents electricity leakage, service life can be 3 years or more
  • Fish Tank Thermostat: 50W aquarium heaters suit for 5-15 Gallon fish tank. Voltage:110V, Power cord is 4.59ft, Max deep water immersion 20 inch/1.7 FT

Quartz tube safety protection: made of heat-resistant milky quartz glass and ul-approved power cord, controller ipx4, heater ipx8 that make it pretty shatter-proof and explosion-proof and prevents electricity leakage, service life can be 3 years or more Correct installation: stick the heater vertical onto the tank side near the water intake or on the way of water flow.this way the heater can quickly sense the water temperature and make adjustments automatically, keep the aquarium heater fully submerged in water Fish tank thermostat: 50w aquarium heaters suit for 5-15 gallon fish tank. voltage:110v, power cord is 4.59ft, max deep water immersion 20 inch/1.7 ft Notice please: before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater and regularly clean the scale on the heater

19
8.6
SCORE
hygger 50W Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat for 5-15 Gallon

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

more infoarrow_drop_down

Product Features

  • 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
  • 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

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 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 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

20
7.9
SCORE
PGFUNNY 50W Aquarium Heater, Adjustable LED Digital Temperature Display Smart Thermostat Betta Fish Heater, for Betta Tank Heater with Protective Guard

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.

more infoarrow_drop_down

Product Features

  • 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.
  • 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.
  • 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 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. 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. 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.

21
7.8
SCORE
Dr. Moss Aquarium Heater Water Heaters for 2~15 GAL Fish Tank Salt Water Freshwater Submersible Temperature Control Element 25w 50w 100w (50w (2-6GAL))

Dr. Moss Aquarium Heater Water Heaters for 2~15 GAL Fish Tank Salt Water Freshwater Submersible Temperature Control Element 25w 50w 100w (50w (2-6GAL))

by Aquarium Equip
What We like

Apply to sea water and fresh water .Easy to install and use

more infoarrow_drop_down

Product Features

  • All Dr. Moss heaters have indicator lights to let you know when the heater is on.
  • Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
  • Visible temperature setting, Temperature adjustable of between 77 F & 82 F.

Visible temperature setting, temperature adjustable of between 77 f & 82 f. All dr. moss heaters have indicator lights to let you know when the heater is on. Please read all label information upon delivery. do not plug heater into an electrical outlet until it is placed inside the aquarium.

22
7.2
SCORE
hygger Saltwater Tank Titanium Tube Submersible Pinpoint Aquarium Heater with Digital Thermostat, IC Temp Controller 200 Watt

hygger Saltwater Tank Titanium Tube Submersible Pinpoint Aquarium Heater with Digital Thermostat

IC Temp Controller 200 Watt

by hygger
What We like

[SHATTERPROOF & ANTICORROSION]: Our Titanium Heater is completely shatterproof as there is NO glass in the construction its made from heavy duty, durable Titanium. As it has a great feature of being anticorrosion, it is perfect for freshwater, saltwater aquariums and reef tanks.

more infoarrow_drop_down

Product Features

  • [TANK CAPACITY]: 200-watt aquarium heater, 10.7 inches in length. Recommended for aquariums with 20 to 45 gallons of water capacity.
  • [FULLY SUBMERSIBLE]: Our Betta Tank Heater is fully submersible in water HORIZONTALLY with 2 suction cups can be easily mounted on tank. Place it near a strong water flow so that the whole aquarium at the same temperature. Comes with a separate controller where you can easily adjust from low to high without taking out the heater from the aquarium or fish tank.
  • [AUTOMATED SHUT OFF SYSTEM]: Temperature can be controlled and set to your desired degree of heat. It automatically sets off when it reached the designated temperature of your setting. Voltage: 110V
  • [PINPOINT TEMPERATURE]: Build-in external electronic theromstat, it has DUAL LCD display that clearly shows you the temperature setting in either Celsius or Fahrenheit. Up is aquarium temperature and down is set temperature. Heater will stop heating when temperature rise exactly to your desired temp. Heating temperature range 32 to 104F. Control accuracy is +/- 0.5 C.

[fully submersible]: our betta tank heater is fully submersible in water horizontally with 2 suction cups can be easily mounted on tank. place it near a strong water flow so that the whole aquarium at the same temperature. comes with a separate controller where you can easily adjust from low to high without taking out the heater from the aquarium or fish tank. [pinpoint temperature]: build-in external electronic theromstat, it has dual lcd display that clearly shows you the temperature setting in either celsius or fahrenheit. up is aquarium temperature and down is set temperature. heater will stop heating when temperature rise exactly to your desired temp. heating temperature range 32 to 104f. control accuracy is +/- 0.5 c. [tank capacity]: 200-watt aquarium heater, 10.7 inches in length. recommended for aquariums with 20 to 45 gallons of water capacity. [automated shut off system]: temperature can be controlled and set to your desired degree of heat. it automatically sets off when it reached the designated temperature of your setting. voltage: 110v

23
7.1
SCORE
Orlushy Submersible Aquarium Heater 150W for Marine Reef Fish Tank Sump

Orlushy Submersible Aquarium Heater 150W for Marine Reef Fish Tank Sump

by Nova pet supplies co.LTD
What We like

Precise temperature dial from 68 to 89F allows for complete control of aquatic climate within a 1-degree difference.

more infoarrow_drop_down

Product Features

  • It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
  • 150W aquarium heater is suitable for 30 to 50 gallons aquariums,Length - 9.5",voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.

Adjustable aquarium fish tank water heater sensitive and reliable thermostat maintains uniform temperature. automatic shut off when the temperature is reached Explosion proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank. It shows an area to adjust the temperature. it's not exactly accurate but it turns easy and can be adjusted at small intervals. 150w aquarium heater is suitable for 30 to 50 gallons aquariums,length - 9.5",voltage 110-120v, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.

24
7.1
SCORE
Hygger Mini Glass Aquarium Heater Adjustable LED Digital Temperature Display Small Tank Heater for Turtle Betta Fish Bowl with Protective Guard 50W

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

more infoarrow_drop_down

Product Features

  • 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
  • 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.

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. 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

25
7
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

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.

more infoarrow_drop_down

Product Features

  • 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.
  • 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.

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.

expand_less

I Agree
We use cookies to enhance and personalise your experience with us by collecting information about the pages you visit and actions taken on the site. More details