25 Best Fish Heaters

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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.

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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.
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

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.

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9.8

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Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-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

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.
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. High quality: aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation. Fully submersible. power: 100w. suggested water volume: 20 gal. 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.

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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.

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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.
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.
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

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. 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. 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

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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).

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Product Features

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.
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.

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. 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. 50w aquarium heater, length 7.8-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 20 gallons.

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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.

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Product Features

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.

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.

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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.
[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.
[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.

[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. [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. [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. [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.

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Uniclife Aquarium Heater Submersible with Thermometer

50 Watt for 10 Gallon Fish Tank

by Uniclife

What We like

Red rotatable knob on top for adjusting the temperatures between ranges of 68F-93F. Visible temperature displayed allows accurate temperature maintain.

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Product Features

Please notice the red indicator light is on while working, will automatically turned off when temperature reached. Carefully check external condition before use. Recommend testing before introduce to fish.
Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 8.6" x 1" (L x D)
Uniclife submersible heater, ideal for 5-15gal fish tanks, can be installed in both fresh and saltwater.
Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(Color of number will change to blue to indicate the temperature).

Please notice the red indicator light is on while working, will automatically turned off when temperature reached. carefully check external condition before use. recommend testing before introduce to fish. Come with Uniclife aquarium heater x 1; suction cups x 3; stick-on thermometer x 1(color of number will change to blue to indicate the temperature). Uniclife submersible heater, ideal for 5-15gal fish tanks, can be installed in both fresh and saltwater. Water-tight with ip68 sealing workmanship. fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. measures 8.6" x 1" (l x d)

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U-picks Submersible Aquarium Heater 500W/300W/100W Fish Tank Heater with Dual Intelligent External LED Digital Temperature Displays and Controller for Turtle Betta Fish Tank 80-130 Gallon (500W)

by U-picks

What We like

[High Quality Material]---Made of thicker quartz, this heater is shatter-proof and blast-proof. The heater cover is compact designed, which is heat resistant that will protect you little fish from scalding. Strong suction cup bracket help stably fix the heater in every corner of the fish tank.

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Product Features

[External Controller]---This 500W submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. Its convenient and safe for you to set the temperature, no need to take the heater out from water and risk burning yourself.
[Fully Submersible Aquarium Heater]---Voltage 110-120V/60HZ, power 500 watt, heater rod length 10.8 inches, suitable for aquarium/fish/turtle/betta tank 80-130 gallon. The controller power cord is 47 inches, The heater power cord is 67 inches and the temperature control range from 68~93F.
[Dual Temp Displays]---With dual accurate LED digital temperature displays, you can read & set the water temperature at the same time. It is very easy and convenient for you to recognize and observe the temp change in real time even in the night!
[Smart Heating]---When the water temperature is lower than the set temperature (red indicator), the fish heater starts to work until the water temperature reaches the set temperature (blue indicator). It can always provide stable water temperature for your beloved fish.

[smart heating]---when the water temperature is lower than the set temperature (red indicator), the fish heater starts to work until the water temperature reaches the set temperature (blue indicator). it can always provide stable water temperature for your beloved fish. [fully submersible aquarium heater]---voltage 110-120v/60hz, power 500 watt, heater rod length 10.8 inches, suitable for aquarium/fish/turtle/betta tank 80-130 gallon. the controller power cord is 47 inches, the heater power cord is 67 inches and the temperature control range from 68~93f. [external controller]---this 500w submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. its convenient and safe for you to set the temperature, no need to take the heater out from water and risk burning yourself. [dual temp displays]---with dual accurate led digital temperature displays, you can read & set the water temperature at the same time. it is very easy and convenient for you to recognize and observe the temp change in real time even in the night!

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VIVOSUN 300W Aquarium Heater Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display and External Temperature Controller

by VIVOSUN

What We like

EASY TO SETUP: 300W submersible heater is suitable for 31.7 to 66 gallons aquariums; Vertical or horizontal installation and ensure the device is fully submerged underwater

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Product Features

WIDE COMPATIBILITY: The fish tank aquarium heater has CE, FCC and ROHS certification and the plug has a UL certification; Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems
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
PRECISE TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within 1/2F; Provide the best living environment for your aquatic creatures

Precise temperature control: an intelligent ic chip controls the heater temperature, making the temperature difference within 1/2f; provide the best living environment for your aquatic creatures Wide compatibility: the fish tank aquarium heater has ce, fcc and rohs certification and the plug has a ul certification; applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems 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

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NICREW Preset Aquarium Heater

Fish Tank Heater with Electronic Thermostat, Fits for 3-10 Gallon Tanks, 50-Watt, UL Listed

by NICREW

What We like

Made from heat, shatter resistant quartz glass to allows for safe temperature control

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Product Features

Suitable for 3 - 10 gallon freshwater, marine and tropical aquariums
Automatic safety shut-off to avoid overheating
Preset to 78F - no adjustment required, which is the ideal temperature for most tropical fish
Indicator light allows simple visual confirmation of heater operation (red: heating up; off: temperature reached or unplugged)

Suitable for 3 - 10 gallon freshwater, marine and tropical aquariums Preset to 78f - no adjustment required, which is the ideal temperature for most tropical fish Indicator light allows simple visual confirmation of heater operation (red: heating up; off: temperature reached or unplugged) Automatic safety shut-off to avoid overheating

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LUYS Aquarium Heater

Upgraded 300W/500W Fish Tank Heater with Intelligent Leaving Water Automatically Stop Heating and Over Temperature Protection System, Suitable for Marine Saltwater and Freshwater

by LUYS

What We like

Wide Range of UseThis aquarium heater is suitable for many occasions. The fish market is a common place for us. It can maintain the freshness of fish. They are also suitable for places where aquatic life such as fish tanks, aquariums, and small fish ponds are kept. There are strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged.

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Product Features

Intelligent Water Sensor and Over Temperature ProtectionThis aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.
Digital LED Display Controllerthe external IC temp controller of the fish tank heater can show the water temp with 2 red LED digits. The temperature in Fahrenheit and Celsius is displayed, which can be switched by pressing and holding the button for a few seconds. To set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again.
Explosion-proof Quartz MaterialThe aquarium heater is made of high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger black protective container is scald-preventing for your aquatic organisms and your safety.

Digital led display controllerthe external ic temp controller of the fish tank heater can show the water temp with 2 red led digits. the temperature in fahrenheit and celsius is displayed, which can be switched by pressing and holding the button for a few seconds. to set the temp, just press the button over and over until the screen displaying the temp you desired, the setting is done and the led shows the current water temp again. Explosion-proof quartz materialthe aquarium heater is made of high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, which is pretty shatter-proof and blast-proof and prevents electricity leakage. and the stronger black protective container is scald-preventing for your aquatic organisms and your safety. Intelligent water sensor and over temperature protectionthis aquarium heater has a unique intelligent temperature and water sensor system, the heater will automatically stop heating when the heater is completely out of water or it rapidly heats beyond the set temperature, the indicator light will turn green in both cases to ensure the maximum safety of you and your aquatic organisms just like protecting our own safety.

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hygger 100W 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

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
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
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

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 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

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8.9

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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

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.
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. 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.

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8.9

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MQ Submersible Aquarium Heater Auto Thermostat

300W Fish Tank Heater with LCD Digital Aquarium Thermometer, Shatter-Proof and Blast-Proof for Fresh or Salt Water

by MQ

What We like

For Fish Tank 30-60 gallon300W aquarium heater, voltage AC 110-120V, power cord is 5.0ft, please choose the right wattage aquarium heater according to our size chart. Comes with detachable shield and 2 suction cups. It's easy to hide it in the tank (acrylic or glass).

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Product Features

BUY ONE GET ONE IN FREE: This fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. It provide a constant warm environment for your pet fish to stay healthy.
BLAST-PROOF: Made of shock resistant quartz glass, covered with double sealed case, explosion-proof and no electricity leakage, preventing your pets being scalding. Can be used in fresh water and salt water aquariums.
TEMP ADJUSTABLE: Temperature can be adjusted between 68-94. You can set the temp to one of these values on the dial: 68, 71, 75, 78, 82, 86, 90, 94 by rotating the pointer, which allows for complete control of aquatic climate within a 2-degree difference.
SAFETY PROTECTION: Effectively maintain the tank water in the constant temp you set, stop heating when the water temp is 1.5-2 above the set temp and restart heating when the water temp is 1.5-2 below the set temp.

Blast-proof: made of shock resistant quartz glass, covered with double sealed case, explosion-proof and no electricity leakage, preventing your pets being scalding. can be used in fresh water and salt water aquariums. Temp adjustable: temperature can be adjusted between 68-94. you can set the temp to one of these values on the dial: 68, 71, 75, 78, 82, 86, 90, 94 by rotating the pointer, which allows for complete control of aquatic climate within a 2-degree difference. Buy one get one in free: this fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. it provide a constant warm environment for your pet fish to stay healthy. Safety protection: effectively maintain the tank water in the constant temp you set, stop heating when the water temp is 1.5-2 above the set temp and restart heating when the water temp is 1.5-2 below the set temp.

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FEDOUR Adjustable Aquarium Heater with Protective Cover

30W 50W 60W 120W Submersible Heater Thermostat for 5-40Gallon Fish and Turtle Tank (120W for 15-40Gallon)

by IBAY

What We like

More Power and Longer Life: This heater is for 15-40 gallon fish tank, comparing to 100W, this 120W aquarium heater is more powerful and heating the same water in shorten time. Less working time provide longer life.

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Product Features

Application: 120W suitable for15-40gallon fish tank, suitable for both fresh and marine water, suitable for all kinds of fish, turtle and plants. Size: 24cm in Length.
High-precision temperature control system, adjustable temperature ranges from 20C - 34C (68F to 93F).
Double Safety Protection: 2mm thickened explosion-proof glass, 33% thicker than normal 1.5mm aquarium heaters, adding a specialized protective cover wrapping the heater tube, more durable and much safer for both human and aquatic creature.

Application: 120w suitable for15-40gallon fish tank, suitable for both fresh and marine water, suitable for all kinds of fish, turtle and plants. size: 24cm in length. High-precision temperature control system, adjustable temperature ranges from 20c - 34c (68f to 93f). Double safety protection: 2mm thickened explosion-proof glass, 33% thicker than normal 1.5mm aquarium heaters, adding a specialized protective cover wrapping the heater tube, more durable and much safer for both human and aquatic creature.

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Small Size Submersible Aquarium Heater, Intelligent Frequency Conversion, Mini Fish Tank Heater 50W 100W with Built-in Thermometer, LED Temperature Display, External Temperature Controller (50W)

YukiHalu Small Size Submersible Aquarium Heater

Intelligent Frequency Conversion, Mini Fish Tank Heater 50W 100W with Built-in Thermometer, LED Temperature Display, External Temperature Controller (50W)

by YukiHalu

What We like

Easy to Read & Built-in ThermometerDual built-in temperature sensor. Dual LED display. The water temperature will be displayed on both the heater and the external temperature controller in real time.

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Product Features

Easy to adjust the temperature without wet your handsThe heater is its external controller to set the temp instead of dipping your hands into your tank to rotate a dial found on most glass tube heaters. Here you can change the temperature as many times as you like without having to ever wet your hands or contaminating your tank. 3 Strong suction cups, easy to install.
1 Accuracy & Intelligent Frequency ConversionThanks to advanced Intelligent Frequency Conversion Technology, the temperature accuracy is up to 1. If the temperature is lower than the target value of 0.2F, the heater works at a Variable frequency to keep the temperature constant. If the water temperature is lower than the target temperature of 1F, the heater will work at full power. Compare to traditional heater, this new technology will cut down 49% electricity bill for you.
Compact and Quiet, 50W Heater YukiHalu small aquarium heater is suitable for 1~10 gallon mini fish tanks. Much more compact than a comparable 50W glass tube heater and takes less space in your tank, easy to hide in the tank. Temperature can be accurately adjusted from 64 to 93F. This heater suitable for both saltwater and freshwater. The rated voltage is 100-130V.

Compact and quiet, 50w heater YukiHalu small aquarium heater is suitable for 1~10 gallon mini fish tanks. much more compact than a comparable 50w glass tube heater and takes less space in your tank, easy to hide in the tank. temperature can be accurately adjusted from 64 to 93f. this heater suitable for both saltwater and freshwater. the rated voltage is 100-130v. Easy to adjust the temperature without wet your handsthe heater is its external controller to set the temp instead of dipping your hands into your tank to rotate a dial found on most glass tube heaters. here you can change the temperature as many times as you like without having to ever wet your hands or contaminating your tank. 3 strong suction cups, easy to install. 1 accuracy & intelligent frequency conversionthanks to advanced intelligent frequency conversion technology, the temperature accuracy is up to 1. if the temperature is lower than the target value of 0.2f, the heater works at a variable frequency to keep the temperature constant. if the water temperature is lower than the target temperature of 1f, the heater will work at full power. compare to traditional heater, this new technology will cut down 49% electricity bill for you.

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Orlushy Submersible Aquarium Heater 300W-Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups Suitable 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.

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Product Features

300W aquarium heater is suitable for 50 to 80 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
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.
Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached

300w aquarium heater is suitable for 50 to 80 gallons aquariums,length - 11 inch,voltage 110-120v, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart. It shows an area to adjust the temperature. it's not exactly accurate but it turns easy and can be adjusted at small intervals. 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.

18

8.6

SCORE

SALUTE Aquarium Heater Submersible Auto Thermostat Heater

(50W/100W/200W/300W) Fish Tank Heater and Adjustable Temperature with 2 Suction Cups Suitable for 10-115 Gallon Fish Tank

by SALUTE

What We like

Safe to use: Double waterproof protection, complete underwater design can accurately maintain the temperature. Aquarium heater with two individual suction units available for safety. Polarity prevention and the power conversion is safe and reliable. Easy operation and high temperature resistance, explosion-proof quartz glass tube, high safety!

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Product Features

Accurate Temperature Control: Power: 100W. Suggested water volume: 20-45gal. The aquarium heater temperature can be adjusted automatically. It is very easy to adjust the temperature you need, Adjustable heater from 68F to 93F (20C - 34C). A good temperature range for most fishes is 76F to 80F (25- 27C).
Suction Cup Fixing: Fish tank heater also equipped with 2suction cups except for thermometer. The lamp is a suction cup type and can be fixed at any position on the cylinder wall. The product's suction cups use thicker, non-aging materials, which greatly extend the life.
High quality: Excellent heat resistance, good thermostat Heater insulation, high heat transfer efficiency, strong support hooks and suction cups, the product is more stable and reliable.

High quality: excellent heat resistance, good thermostat heater insulation, high heat transfer efficiency, strong support hooks and suction cups, the product is more stable and reliable. Accurate temperature control: power: 100w. suggested water volume: 20-45gal. the aquarium heater temperature can be adjusted automatically. it is very easy to adjust the temperature you need, adjustable heater from 68f to 93f (20c - 34c). a good temperature range for most fishes is 76f to 80f (25- 27c). Suction cup fixing: fish tank heater also equipped with 2suction cups except for thermometer. the lamp is a suction cup type and can be fixed at any position on the cylinder wall. the product's suction cups use thicker, non-aging materials, which greatly extend the life.

19

8.6

SCORE

HITOP-Fish Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater

for 5 – 50 Gallon Fish Tank (50W for 5-20 Gallon)

by IBAY

What We like

Long Service Life: Adopt 8-slot multi-branched heating wire ceramic frame, shorter length, 7.8*1*1 in(20*2.5*2.5 cm), better heat dissipation, and can save more space for your fishes.

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Product Features

Explosion Proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals.
Application: 50W water heater is suitable for 5 20 gallon tank, also suitable for both saltwater and freshwater.
Accurate Temperature: Temperatures from 68F to 93F (20C - 34C), come with a thermometer sticker, convenient to detect the water temperature without another pay.

Explosion proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals. Accurate temperature: temperatures from 68f to 93f (20c - 34c), come with a thermometer sticker, convenient to detect the water temperature without another pay. Application: 50w water heater is suitable for 5 20 gallon tank, also suitable for both saltwater and freshwater.

20

8.5

SCORE

Zacro Aquarium Heater

100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank

by Zacro

What We like

INTELLIGENT TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within 2F. 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. Provide the best living environment for your aquatic creatures.

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Product Features

SHUT OFF WHEN OUT OF WATER: Please 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 Er. The product uses explosion-proof quartz tube and is equipped with a plastic anti-collision sheath to prevent your aquatic organisms from being injured by touching the heating rod.
Our heating rods can be used continuously for up to 10,000 hours and can display the use time. Let you replace the heating rod in time to ensure the continuous water temperature.
DIGITAL DISPLAY&REMOTE CONTROLLER: Digital LED display shows real time water temperature. Heating temperature range from 68 to 91F. The remote-button controller adjusts the temperature without getting your hands wet.
AUTOMATIC OVERHEATING PROTECTION: Once 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. If the heating rod temperature reaches 96.8F (36C), the heating rod will stop heating. The thermometer can observe the water temperature at any time.

Our heating rods can be used continuously for up to 10,000 hours and can display the use time. let you replace the heating rod in time to ensure the continuous water temperature. Automatic overheating protection: once 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. if the heating rod temperature reaches 96.8f (36c), the heating rod will stop heating. the thermometer can observe the water temperature at any time. Digital display&remote controller: digital led display shows real time water temperature. heating temperature range from 68 to 91f. the remote-button controller adjusts the temperature without getting your hands wet. Shut off when out of water: please 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 er. the product uses explosion-proof quartz tube and is equipped with a plastic anti-collision sheath to prevent your aquatic organisms from being injured by touching the heating rod.

21

8.4

SCORE

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

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!

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!!

22

8

SCORE

Uniclife Aquarium Heater Submersible with Thermometer

300 Watt for 80 Gallon Fish Tank

by Uniclife

What We like

Red rotatable knob on top for adjusting the temperatures between ranges of 68F-93F. Visible temperature displayed allows accurate temperature maintain.

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Product Features

Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 11.2" x 1" (L x D)
Please notice the red indicator light is on while working, will automatically turn off when temperature reached. Carefully check external condition before use. Recommend testing before introduce to fish.
Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The color of number will change to blue to indicate the temperature).
Ideal for 50-80 gallons fish tanks, can be installed in both fresh and saltwater.

Water-tight with ip68 sealing workmanship. fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. measures 11.2" x 1" (l x d) Come with Uniclife aquarium heater x 1; suction cups x 3; stick-on thermometer x 1(the color of number will change to blue to indicate the temperature). Please notice the red indicator light is on while working, will automatically turn off when temperature reached. carefully check external condition before use. recommend testing before introduce to fish. Ideal for 50-80 gallons fish tanks, can be installed in both fresh and saltwater.

23

7.4

SCORE

AQQA Submersible Aquarium Heater

Fish Tank Heater (100W for 25-35 Gallon Tank)

by AQQA

What We like

INTELLIGENT AUTOMATIC HEATING: Automatic constant temperature function, design with External Temperature Controller, Temperature Range is 59F- 93 F (15 C- 34 C), Hold button at the top of the controller down for 5 seconds, switch easily from Celsius to Fahrenheit. It will restart to heating when the water temp is 1(1 C ) off the set temp. If power is shut off, the heater will keep the temperature settings until it powers on again

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Product Features

EASY INSTALLATION: Easy and quick installation, submersible fish tank heater, vertical or horizontal placement using attached adjustable hanging rack and 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
Digital LED Display: LED display on the middle of the controller front side, Current Temp and Set Temp. If your heater is working properly, the red light will be constant on. When the temperature is reached 93(34), it will stop work, the blue light will be constant on. When the heater exposed to air and is not fully submerged, then display the blue light and E1 fault
SAFE& DURABLE: Made of heat-resistant quartz glass and PC plastic cover, 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

Safe& durable: made of heat-resistant quartz glass and pc plastic cover, 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 Easy installation: easy and quick installation, submersible fish tank heater, vertical or horizontal placement using attached adjustable hanging rack and 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 Digital led display: led display on the middle of the controller front side, current temp and set temp. if your heater is working properly, the red light will be constant on. when the temperature is reached 93(34), it will stop work, the blue light will be constant on. when the heater exposed to air and is not fully submerged, then display the blue light and e1 fault

24

7.1

SCORE

LUYS PTC Aquarium Heater (50W / 100W / 200W / 300W / 500W)

with External Temperature Controller and LED Temperature Display for Fish Tank

by LUYS

What We like

Safety Design Provides Double Protection for Your AquariumThis heater has overheating protection function and it can be auto shut off when out of water. When overheating (more than 93 Fahrenheit), it will automatically shut down, and it will automatically reset when it cools to the starting temperature (usually two degrees lower than the set temperature). When the water level is lower than the water level probe, it will stop heating, automatically cut off the power, and display E1 fault.

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Product Features

Precise Temperature ControlLUYS aquarium heaters use unique temperature-control technology which can easily control the aquarium temperature to a preset temperature. The easy-to-read red LED temperature display shows the real-time water temperature on the large screen. When the fish tank heater starts to heat, the heating indicator lights turns red, and once it reaches the set temperature, it will turn blue. The temperature accuracy is +/-1 F.
Fast Heating Speed, 50%+ Energy SavingThe main material of the heating rod is PTC. Under the same conditions, the heating speed is 2-3 times that of the ordinary heating rod, and it can save 50% of electricity for you.At the same time, the heating rod has a temperature memory function, which automatically saves the set temperature after the power is turned off, and automatically heats to the set temperature after the mains power returns.
Quartz Tube Protects Heating Materials from Corrosion and Electric LeakageThe aquarium heater is made of high-quality quartz explosion-proof glass and high thermal conductivity silicon carbide, and is double-sealed with a black protective cover to prevent explosion and corrosion, and protect fish and other livestock are protected from burns
External Temperature Controller, Make the Temperature Setting EasierThe external controller is easy to set the temperature without getting your hands wet. The temperature can be adjusted precisely from 68 to 93 F (20 C to 33 C), and the water temperature probe is located at the bottom to detect the temperature more accurately. Just press the setting button to your required temperature and the blue light flashes for 3 seconds to start working

External temperature controller, make the temperature setting easierthe external controller is easy to set the temperature without getting your hands wet. the temperature can be adjusted precisely from 68 to 93 f (20 c to 33 c), and the water temperature probe is located at the bottom to detect the temperature more accurately. just press the setting button to your required temperature and the blue light flashes for 3 seconds to start working Quartz tube protects heating materials from corrosion and electric leakagethe aquarium heater is made of high-quality quartz explosion-proof glass and high thermal conductivity silicon carbide, and is double-sealed with a black protective cover to prevent explosion and corrosion, and protect fish and other livestock are protected from burns Fast heating speed, 50%+ energy savingthe main material of the heating rod is ptc. under the same conditions, the heating speed is 2-3 times that of the ordinary heating rod, and it can save 50% of electricity for you.at the same time, the heating rod has a temperature memory function, which automatically saves the set temperature after the power is turned off, and automatically heats to the set temperature after the mains power returns. Precise temperature controlLUYS aquarium heaters use unique temperature-control technology which can easily control the aquarium temperature to a preset temperature. the easy-to-read red led temperature display shows the real-time water temperature on the large screen. when the fish tank heater starts to heat, the heating indicator lights turns red, and once it reaches the set temperature, it will turn blue. the temperature accuracy is +/-1 f.

25

7

SCORE

POPETPOP [Upgraded 400W Aquarium Heater

Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display

by POPETPOP

What We like

[UPGRADED] MORE PRECISE TEMPERATURE - Upgraded sensing probes on the top of heater provides more precise induction that reduces temperature error which allows you check the temperature of the aquarium more easily to prevent the difference temperature in water from making the fish sick.

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Product Features

SIMPLE OPERATION - The 400w fish tank heater can be used in 70-80gal gallon fresh water and salt water aquariums. Easy to set temp from 20C ~ 34C(68~ 94). Note: Don't expose the heater out of water surface as this may cause damage to the heater.
SAFETY PROTECTION - The fish tank aquarium heater has CE, FCC and ROHS certification. When sensing probe is exposed in the air or detected the water is overheating, the heater will stop heating. Giving your aquarium fish, amphibians, turtles safety protection.
[UPGRADED] DURABLE HEATING WIRE - The aquarium heater was changed from the original iron-chromium wire to the nickel-chromium wire to ensure the heater has longer life and precisely control heater temperature. It is extremely durable and stable, and faster heating than normal glass heaters.
EASY TO ADJUST TEMPERATURE - LED digital display temperature that is easy to observe the temperature set by the heater. Using intelligent IC chip for more precise temperature control with less error (1C/2). The touch button ensures that the hand is not wet when adjusting the temperature.

easy to adjust temperature - led digital display temperature that is easy to observe the temperature set by the heater. using intelligent ic chip for more precise temperature control with less error (1c/2). the touch button ensures that the hand is not wet when adjusting the temperature. safety protection - the fish tank aquarium heater has ce, fcc and rohs certification. when sensing probe is exposed in the air or detected the water is overheating, the heater will stop heating. giving your aquarium fish, amphibians, turtles safety protection. [upgraded] durable heating wire - the aquarium heater was changed from the original iron-chromium wire to the nickel-chromium wire to ensure the heater has longer life and precisely control heater temperature. it is extremely durable and stable, and faster heating than normal glass heaters. simple operation - the 400w fish tank heater can be used in 70-80gal gallon fresh water and salt water aquariums. easy to set temp from 20c ~ 34c(68~ 94). note: don't expose the heater out of water surface as this may cause damage to the heater.

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