Editor's Choice - Our Favorite boxtech Aquarium Heaters

1. boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2...

User Ratings: 69 8

boxtech First Impressions

"Best addition to my tank."

There is no protection from it banging on the glass tank. Sometimes you may have to tinker around with the dial. I got this heater for my 55 gallon aquarium. Awesome chiller, perfect for Hydroponics. The heater is easy; turn the dial to set temp and plug in. 210 gallon ones and one 90 gallon bow front tank. I got the 200W variant for my 54 gallon corner tank that's housing goldfish.

  • boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2 Suction Cups Suit Marine Saltwater and Freshwater
  • Fish Tank Heater: 300W aquarium heaters suit for 30 - 80 Gallon fish tank. Voltage:110V, power cord is 5.57ft, Max deep water immersion 20 inch/1.7 FT
  • 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
  • Fully Automatic Control: Design with External Temperature Controller, Temperature Range is 68 ºF-90 ºF, 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
  • 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
  • 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
  • Temperature Control: Design with External Temperature Controller, Temperature Range is 68ºF-90ºF, 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.
  • Voltage:110 V Frequency: 50HZ
  • Led Indicator Light:When it working, the indicator light is red.
  • Manufacture: BOXTECH
  • Product Dimensions: 13.39 x 1.97 x 3.54 inches; 11.99 Ounces
  • Editor's Impressions Of The boxtech
  • Heat Quality [star rating='4.9']
  • Quality [star rating='4.7']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='3.4']

boxtech Final Thoughts

"There was only~0."

You don't have to worry about wide temperature swings with this unit. I was amazed how quickly I got to my temperature I need it 78 degrees. This has been in my fish tank for a few months now and it's been absolutely perfect! You don't have to worry about wide temperature swings with this unit. It is a bonus that the heater is titanium. I have it set to 81F to get a 77F water temp. My fish likes to get close to it and he has never been hurt by it.

Overall Score
4.3

[star rating="4.3"]
(523 Points)

2. ZHFEISY 300w Aquarium Fish Tank Cooler Electronic Water Chiller Cooling Machine 100L

User Ratings: 54 46

ZHFEISY First Impressions

"5 stars in my book!"

But my guys don't read them and don't listen! I emailed the email it says to and told them. Personally for me the housing doesn't bother me. For Discus you need warm and accurate heater and this seems to do the trick. I dont know, and havent tried just yet. It would stick out of my 30 g wide tank if I were to put it vertical. The red light means it's off, blue light means the temperature is constant.

  • ZHFEISY 300w Aquarium Fish Tank Cooler Electronic Water Chiller Cooling Machine 100L
  • 【Product Parameters】 Working voltage: AC110V /60HZ; Machine power: 300W; Take-over specifications: 8MM hose; Temperature probe length: 1.2M;
  • 【Features】1. Real-time temperature display, simple operation setting; 2, Automatic temperature control and energy saving, start cold quickly (<5 seconds)
  • 【Connection】An external pump is required to pump water or directly in series with the flow pipe.
  • 【Application】Applicable to seawater, fresh water and medium and low acid and alkaline environment.
  • 【1-Year Warranty】If you need refund/return or have any questions, plz feel free to contact us.
  • Manufacture: ZHFEISY
  • Editor's Impressions Of The ZHFEISY
  • Heat Quality [star rating='2.7']
  • Quality [star rating='3.2']
  • Value For Money [star rating='2.8']
  • Affordability [star rating='2.6']

ZHFEISY Final Thoughts

"Pricing was good."

I appreciate the exterior temp readout and control module. There is no protection from it banging on the glass tank. This heater is NOT fully submersible. I wouldn't buy any other heater, unless one of these stops working. Now, both points are clear on the package instructions. Maintains it well except when the weather is already warm then it over heats it. It would stick out of my 30 g wide tank if I were to put it vertical.

Overall Score
3.2

[star rating="3.2"]
(2 Points)

3. Uniclife Aquarium Heater Submersible with Thermometer, 50 Watt for 10 Gallon Fish Tank

User Ratings: 83

Uniclife First Impressions

"Long heater."

At this time I highly recommend this product. At this time I highly recommend this product. Per my thermometers, they are all staying constant. I waited a little bit to write the review so it could be accurate. It does blend well in some setups and may look bulky in others. If the blue light is flashing it means the heater is not fully submersible. Awesome chiller, perfect for Hydroponics.

  • Uniclife Aquarium Heater Submersible with Thermometer, 50 Watt for 10 Gallon Fish Tank
  • Uniclife submersible heater, ideal for 5-15gal fish tanks, can be installed in both fresh and saltwater.
  • Red rotatable knob on top for adjusting the temperatures between ranges of 68°F-93°F. Visible temperature displayed allows accurate temperature maintain.
  • 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)
  • 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).
  • By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
  • The red indicator light on while heating, automatic shut-off when reach the temp.
  • The aquarium glass submersible heater must be fully immersed.
  • Manufacture: Uniclife
  • Editor's Impressions Of The Uniclife
  • Heat Quality [star rating='4']
  • Quality [star rating='4.9']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.7']

Uniclife Final Thoughts

"And I am glad I did."

They shipped us the upgraded version that also heats! It took me a few days slowly turning the dial up to finally get it where I wanted. All seem to vary between 1-2 degrees of each other which doesn't concern me much. It is safe and dependable and comes with a one year warranty. The design is sleek and modern looking. I will be ordering more of these in the future. I dont know, and havent tried just yet.

Overall Score
4.8

[star rating="4.8"]
(20 Points)

4. Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W P...

User Ratings: 71 9

Inkbird 8541956716 First Impressions

"16-26 gallons 75 watt 10."

Keeps the temperature within 1 degree of what you set it to at all times. It's pretty noticeable, but I don't really care. I bought a similar one at the pet store and it barely worked. This is a great heater that is very easy to set up and program. And kids love pushing all sorts of buttons. 210 gallon ones and one 90 gallon bow front tank. Checked the accuracy of the heater with an infrared thermometer.

  • Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W Pre Wired Dual Stage Digital Outlet Probe Heating Cooling Plug Homebrewing Refrigerator Greenhouse
  • Pre-wired controller ITC-308 is served as the successor to the STC-1000. If you don't want to build your own STC-1000, the Inkbird ITC-308 is the solution!
  • Setup is easy, straightforward and quick.
  • The cord on the remote temperature sensor is a bit over 6 feet long.
  • Accurate displays, thermostatic function and temperature calibration.
  • It's an all in one, simple solution providing control of cooling and heating.
  • Item Weight: 14.4 ounces
  • Editor's Impressions Of The Inkbird 8541956716
  • Heat Quality [star rating='3.5']
  • Quality [star rating='5']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='4.6']

Inkbird 8541956716 Final Thoughts

"Pricing was good."

This has the best controller that I have found on the market. The temperature lights up so it's very easy to read. I have a 10gallon tank that was at 72 degrees. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Checked the accuracy of the heater with an infrared thermometer. Now, both points are clear on the package instructions. This little heater is perfect; this is our third purchase of the same heater.

Overall Score
4.3

[star rating="4.3"]
(132 Points)

5. Inkbird ITC308S Temperature Controller for Aquarium with Submersible Probe, Heating Cooling Outlets ...

User Ratings: 84 3

Inkbird First Impressions

"This is a quality heater."

I have 3 of the Fluval heaters, in various sizes. It's pretty noticeable, but I don't really care. We received the chiller promptly and put it into use. Just be careful and keep an eye on your temp settings when you have kids over! This heater is NOT fully submersible. No biggie, but annoying nonetheless. It does blend well in some setups and may look bulky in others.

  • Inkbird ITC308S Temperature Controller for Aquarium with Submersible Probe, Heating Cooling Outlets Thermostat for Heater and Cooling Fans
  • Temperature Control Mode: On/Off Control. Cooling and Heating control.
  • Fully submersible probe. Aquarium probe works better in water than standard probe.
  • Temperature calibration; Over-temperature and sensor fault alarm. Dual display window, be able to display measured temperature and set temperature at the same time.
  • Maximum output load: 1200W (110V).
  • It's an all in one, simple solution providing control of cooling and heating.
  • ITC-308S is an easy-to-use, safe and reliable dual relay output temperature controller.
  • It can be used as Over-temperature protection and automatic temperature control system for various electric appliances such as equipment for home-brew, aquarium, pet breeding, incubation, BBQ, seedling heat mats, oven temperature control, terrestrial heat control, constant temperature cycle of heating pump, culture fermentation, accelerating germination, electric radiator, electric oven, etc.
  • Manufacture: LERWAY Tech.
  • Editor's Impressions Of The Inkbird
  • Heat Quality [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='5']

Inkbird Final Thoughts

"Looks as advertised."

I got a hold of Amazon, who put me in touch with the seller. Once attached to the tank wall I've had no issues with it coming off. I adjusted the set temperature a little lower to be more in the range I wanted. --Temperature adjustment labeling is on top rather than on the rod. I had a thermometer on opposite side of tank and the heater was dead on true. --The cylinder or rod diameter is bigger. But my guys don't read them and don't listen!

Overall Score
4.7

[star rating="4.7"]
(105 Points)

6. Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank

User Ratings: 75 4

HITOP-Fish First Impressions

"5 degrees."

It took me only two tries to get it to the correct temperature. I will definitely be buying another one for my other tanks at bigger one. It's pretty noticeable, but I don't really care. And I get to keep the first one I bought! They promptly fixed the issue without any delays or drama. Also I like how it shows both the current temperature and the set temperature. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees.

  • Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank
  • 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 68°F to 93°F (20°C - 34°C), come with a thermometer sticker, convenient to detect the water temperature without another pay.
  • 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.
  • Complete Accessories and Warranty: Except for thermometer, also equipped with 3 suction cups, one for replacement, and offer 12 months warranty, leave you no worries after you buy it.
  • Manufacture: IBAY
  • Product Dimensions: 7.8 x 1 x 1 inches; 8.78 Ounces
  • Editor's Impressions Of The HITOP-Fish
  • Heat Quality [star rating='4.4']
  • Quality [star rating='5']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='3.8']

HITOP-Fish Final Thoughts

"The FreeSea is amazing."

Keeps the water consistent and it's easy to adjust! But my guys don't read them and don't listen! What more could you ask for great job Hygger Duncan. This heater warmed it right up and now my Betta and guppies are more active. I got this heater for my 55 gallon aquarium. This heater warmed it right up and now my Betta and guppies are more active. At this time I highly recommend this product.

Overall Score
4.5

[star rating="4.5"]
(249 Points)

7. Eheim Thermocontrol e250 Heater, Black (AEH3638090)

Eheim AEH3638090 First Impressions

"It is a bit pricey."

I contacted the manufacturer and they sent me a new unit in less than a week! Ick for instance detaches from fish at 86 degrees and dies at 89. At this time I highly recommend this product. Those turned out to be a hit and miss. This heater is NOT fully submersible. Ick for instance detaches from fish at 86 degrees and dies at 89. The design is sleek and modern looking.

  • Eheim Thermocontrol e250 Heater, Black (AEH3638090)
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 250W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 106-159 Gallons Height: 17. 4" Power Cord Length: 5. 5'
  • Item Package Height: 3.0
  • Item Package Length: 25.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3638090
  • Heat Quality [star rating='5']
  • Quality [star rating='4']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.5']

Eheim AEH3638090 Final Thoughts

"Perfect heater for my 2."

It took me a few days slowly turning the dial up to finally get it where I wanted. I like how the heater is constructed. The bonus digital thermometer it came with has been super helpful, and is accurate. The heater protector was very heavy plastic and slim lined which is great. This has the best controller that I have found on the market. You don't have to worry about wide temperature swings with this unit. This is only day one though, so I shall keep an eye one it.

Overall Score
5.0

[star rating="5"]
(2 Points)

8. Lineba 500 Watt Submersible Aquarium Heater, Fish Aquarium Heater with LED Temperature Display for F...

User Ratings: 73 27

Lineba First Impressions

"Great concept."

Keeps the temperature within 1 degree of what you set it to at all times. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. The temperature has been holding all day, even in a colder room. I think it works well to not stand out like other heaters. It is a bonus that the heater is titanium. Once I opened the box i noticed the quality of the construction. I have it set to 81F to get a 77F water temp.

  • Lineba 500 Watt Submersible Aquarium Heater, Fish Aquarium Heater with LED Temperature Display for Fish Tank
  • *Very easy and reliable to use. After well installing the aquarium heater and the thermometer, you just need to set the desired heating temp, then it can ensure the temperature constant at the set point with the blue indicator light,as it can adjust heating power automatically if there is any water temperature variation.
  • *Made of Durable Titanium alloy Tube-Our seawater resistant titanium aquarium heater is good for use both in salt water and fresh water, long service life.
  • *Antiflaming heater cover can prevent fish from going too close to the heater.
  • *Very compact small size, easy to hide in the tank. Comes with 2 suction cups to keep the heater in place of tank.
  • *There is indicator light to show the heating status on the LED screen through the temperature control. You can long-press the 'Set' key to shift degree unit between Celsius and Fahrenheit.
  • Manufacture: LINEBA
  • Product Dimensions: 5 x 2.3 x 1.3 inches; 13.76 Ounces
  • Editor's Impressions Of The Lineba
  • Heat Quality [star rating='4.6']
  • Quality [star rating='3.1']
  • Value For Money [star rating='2.9']
  • Affordability [star rating='4.7']

Lineba Final Thoughts

"Excellent build quality."

--The heater itself is a bit shorter if your tank is a short one. I got this heater for my 55 gallon aquarium. I bought a similar one at the pet store and it barely worked. After several weeks of running the heater. I have 3 of the Fluval heaters, in various sizes. I'm not a big fan of the big glass tubes. Thanks for the great customer service!

Overall Score
3.9

[star rating="3.9"]
(8 Points)

9. LUYS PTC Aquarium Heater (50W / 100W / 200W / 300W / 500W), with External Temperature Controller and...

User Ratings: 76 7

LUYS First Impressions

"Very pleased so far."

So when I first received it it didn't work and I was very disappointed. I was amazed how quickly I got to my temperature I need it 78 degrees. The suction cups are large, high quality and seem to stick great. I wouldn't buy any other heater, unless one of these stops working. It took about an hour to reach 80f, which is fairly quick. I got this heater for my 55 gallon aquarium. I have 3 of the Fluval heaters, in various sizes.

  • LUYS PTC Aquarium Heater (50W / 100W / 200W / 300W / 500W), with External Temperature Controller and LED Temperature Display for Fish Tank
  • 【Precise Temperature Control】LUYS 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 Saving】The 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.
  • 【Safety Design Provides Double Protection for Your Aquarium】This 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.
  • 【Quartz Tube Protects Heating Materials from Corrosion and Electric Leakage】The 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 Easier】The 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
  • Manufacture: LUYS
  • Product Dimensions: 4.72 x 3.94 x 2.36 inches; 11.43 Ounces
  • Editor's Impressions Of The LUYS
  • Heat Quality [star rating='3.6']
  • Quality [star rating='5']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='4.8']

LUYS Final Thoughts

"They contacted me."

This does a great job at regulating the temp in my 10 gallon. I like the fact that it comes with a digital thermometer. This heater works, but the dial it isn't very accurate. I wouldn't buy any other heater, unless one of these stops working. I have only had minor problems with the suction cups. I like how the heater is constructed. Beware, but we are hoping for a good outcome!

Overall Score
4.4

[star rating="4.4"]
(79 Points)

10. SunGrow Betta Plakat Heater, 10-Watt Submersible Aquarium Water Heater for Small Tanks (1.5-Gallons)...

User Ratings: 72 8

SunGrow First Impressions

"5 gallon tank."

I went ahead and went with the the larger 300W for my 45 gallon. The heater is super thin and the reflective surface is interesting. The bonus digital thermometer it came with has been super helpful, and is accurate. We wish the controls were available in Farenheit also to make things a little easier. Bought it as a chiller for the k40 CO2 laser. Pressing and holding the button for 5 seconds changes it from F to C readouts. Beware, but we are hoping for a good outcome!

  • SunGrow Betta Plakat Heater, 10-Watt Submersible Aquarium Water Heater for Small Tanks (1.5-Gallons), with Preset Temperature Capability, Suction Cups Included
  • ✔ 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 74°F 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 72°F 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 62-74°F.
  • ✔ 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.
  • ✔ 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.
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Heat Quality [star rating='4.8']
  • Quality [star rating='4.7']
  • Value For Money [star rating='4.2']
  • Affordability [star rating='3.8']

SunGrow Final Thoughts

"Temperature!"

It would stick out of my 30 g wide tank if I were to put it vertical. It took about an hour to reach 80f, which is fairly quick. My fish likes to get close to it and he has never been hurt by it. Was very impressed with the quality of this heater. I left seller feedback yesterday but have yet to hear from the seller. I will be ordering more of these in the future. We received the chiller promptly and put it into use.

Overall Score
4.4

[star rating="4.4"]
(71 Points)

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