Editor's Choice - Our Favorite Sunyiny Aquarium Heaters

1. Submersible Aquarium Heater 300w 100w 200w, Anti-Explosion Fish Tank Water Heater and Thermometer wi...

User Ratings: 63 7

Sunyiny First Impressions

"Overall happy."

This is a powerful heater that holds temperature very well. The temperature difference was very minor. Or better yet, conceal it to the back corner. Product was received fast, works excellent! Checked the accuracy of the heater with an infrared thermometer. I left seller feedback yesterday but have yet to hear from the seller. The controller is easy to use, very accurate and reliable.

  • Submersible Aquarium Heater 300w 100w 200w, Anti-Explosion Fish Tank Water Heater and Thermometer with Adjustable Temperature for 20 Gallon,30 Gallon, 50 Gallon Tank,with 2 Pieces Suction Cup Suckers
  • Made of quartz glass,double seal material,high temperature resistant and explosion-proof,shatter-resistant construction, ensures safe operation and keep your fishes from scalding and punching.
  • Visible temperature setting,precise temperature setting to 1-degree F, temperature setting range: 20°~34°C(65° F - 93° F),automatic adjustment temperatures,the cord is about 2.63ft.
  • Fully submerged design,which can maintain the set temperature accurately, equipped with strong support hooks and suckers, fully submersible working on the maximum depth 3.9ft of water,mains power indicator for peace of mine.
  • With sensitive temperature regulator and over-temperature protection device, reliable and high impedance circuit heating wire heating, keep the fish tank water temperature stability, extend its service life.
  • Perfect for fresh and saltwater,submersible power: 100w, ideal for 32 gallon, provide a constant warm environment for your tropical African cichlids or other fish to stay healthy.
  • Manufacture: Sunyiny
  • Editor's Impressions Of The Sunyiny
  • Heat Quality [star rating='4.7']
  • Quality [star rating='5']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.8']

Sunyiny Final Thoughts

"I'll see with these."

Well worth the money the first one I bought still works great. Maintains it well except when the weather is already warm then it over heats it. I tested it by unplugging and replugging it. I have it set to 81F to get a 77F water temp. This heater is NOT fully submersible. Sometimes you may have to tinker around with the dial. The heater is super thin and the reflective surface is interesting.

Overall Score
4.2

[star rating="4.2"]
(284 Points)

2. hygger 60-180 Gallon Aquarium Heater with Digital Temp Controller Shatterproof Titanium Tube 500W 80...

User Ratings: 56 16

hygger First Impressions

"Easy to unpack."

I used to try those other cheap heaters sold on amazon. Pressing and holding the button for 5 seconds changes it from F to C readouts. Once attached to the tank wall I've had no issues with it coming off. We received the chiller promptly and put it into use. For Discus you need warm and accurate heater and this seems to do the trick. I like the fact that it comes with a digital thermometer. Takes a little while to drop the temps if it is hot in the garage.

  • hygger 60-180 Gallon Aquarium Heater with Digital Temp Controller Shatterproof Titanium Tube 500W 800W Submersible Fish Tank Heater for Saltwater Freshwater
  • { RUNNING DRY & OVER-HEAT PROTECTION } This fully submersible fish tank heater maintains proper temperature for your fish in a safety way, auto shut off when over-heats, resets when it cools down. The heater will shut off when removed from the water, and resume functioning upon return
  • {EASY TO READ LCD DISPLAY} Build-in external temp controller, easy to read LED digital number shows real time water temperature and set temperature. Indicator light let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached
  • {SHATTERPROOF CORROSION RESISTANT} Corrosion resistant, shatterproof titanium tube construct heats fast, nealy unbreakable for both saltwater and freshwater aquariums. ABS plastic protective sleeve prevents fish from being scald
  • {EASY TO USE} Easy to set temperature without getting hands wet. Just keep pushing the button. It will cycle through all the set temperatures. Temperature can be precisely adjusted from 68 to 93°F (20°C ~ 34°C), electronic thermostat accurate to +/- 2 degrees Fahrenheit differences
  • {FOR 120-180 GAL} 800 watt aquarium heater, voltage 110-120 Volts, heater rod 9.6 inches long, suitable for tank capacity 120-180 gallon freshwater and saltwater aquariums
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality [star rating='4.8']
  • Quality [star rating='3.5']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='3.2']

hygger Final Thoughts

"5 or even."

I use a 50 for a 5 gal and a 10 gal tank. Was very impressed with the quality of this heater. It is a bonus that the heater is titanium. This heater is NOT fully submersible. Product was received fast, works excellent! Personally for me the housing doesn't bother me. I got the 200W variant for my 54 gallon corner tank that's housing goldfish.

Overall Score
3.8

[star rating="3.8"]
(65 Points)

3. Inkbird 1200 Watts Digital Temperature Controller Aquarium Thermostat for Aquarium Heater, with Wate...

User Ratings: 73 6

Inkbird First Impressions

"I like it."

Also were nice along the whole process. Those turned out to be a hit and miss. This is only day one though, so I shall keep an eye one it. Keeps the water consistent and it's easy to adjust! I like how the heater is constructed. I emailed the email it says to and told them. I love the heater otherwise, but I'm afraid some water has gotten inside the heater.

  • Inkbird 1200 Watts Digital Temperature Controller Aquarium Thermostat for Aquarium Heater, with Waterproof Sensor
  • Wifi & Free APP : Pair the aquarium temperature controller with your phone via 2.4GHz Wi-Fi, the device will alarm if there are exceptions. And all exceptions will be updated to the APP, the app will push notifications to remind you.(APP: ☞InkbirdSmart)
  • Dual Protection : The wifi temperature controller is equipped with 2 relays(current relay) to ensure that the power can be turned off under any abnormal circumstances, will protect your fish from being hurt by overheated water
  • Continous Heating Alarm The heating time can be set according to your needs from 1 hour to 72 hours. The controller will alarm once the water can not be heated to the setting temperature within the specified time. The temperature setting range is 20.0℃~35.0℃/68.0℉~95.0℉ and the measure temperature range is -40℃~100℃/-40℉~212℉.
  • Easy to use : Plug and Play. The 10A 1200w programmable and prewired aquarium thermostat is compatible with most kinds of heaters, no need to assemble the product yourself, just plug and play.
  • Dual probe for safety :The aquarium heater controller will alarm once the temperature difference between 2 probes is more than 5℉(3℃), and the app will push a notification at the same time.To protect your fish in a more safet environment
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Heat Quality [star rating='3.5']
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='4.2']

Inkbird Final Thoughts

"So far so good!"

But I am single and don't have to worry about this. The temperatures are pretty accurate. The red light means it's off, blue light means the temperature is constant. I was worried about the quality but I am thoroughly impressed with this heater! When i installed them, i let them sit in the tanks without power for 6-24 hours. This has been in my fish tank for a few months now and it's been absolutely perfect! I use a 50 for a 5 gal and a 10 gal tank.

Overall Score
4.4

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

4. hygger 200W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 15-30 Gallo...

User Ratings: 73 9

hygger HG-925 First Impressions

"Works fine."

I went ahead and went with the the larger 300W for my 45 gallon. It comes with a hanging kit and can be secured on the edge of the tank. I got a hold of Amazon, who put me in touch with the seller. Very easy to install and the adjustable temperature gauge is pretty accurate. Two inches above that is a waterline for maximum. This is a great heater that is very easy to set up and program. The temperature difference was very minor.

  • hygger 200W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 15-30 Gallon
  • This fully submersible aquarium heater enables memory function and over heat protection. Auto shut off when over-heats, resets when it cools down
  • Made with premium quartz and double sealed by black protective guard, this fish tank heater is resistant to corrosion, and protect fish and other livestocks from punching and scalding
  • Build-in external IC temp controller, easy to read blue LED digital number shows real time water temperature. Heat indicator lights on red when fish heater start to heat and turns in yellow once it reach set temperature. Temp accuracy is +/- 1°F
  • Easy to set temperature without getting hands wet. Temperature can be precisely adjusted from 61 to 90°F (16°C ~ 32°C). Just press set button to desired temperature, it blinks 3 seconds and begins to work
  • 200 watt aquarium heater, voltage 110-120 V, heater rod 6.3 inches long, suitable for tank capacity 15-30 gallon freshwater and saltwater aquariums
  • IP68 100% Waterproof, Fully Submersible
  • Dual Protection - Durable Quartz Tube, resistant to corrosion; Double sealed material and protective container for scald preventing and anti punching Accurate temperature control from 61°F to 90°F (16°C ~ 32°C)
  • Easy to read blue LED digital display shows water temperature
  • Manufacture: hygger
  • Editor's Impressions Of The hygger HG-925
  • Heat Quality [star rating='3.9']
  • Quality [star rating='5']
  • Value For Money [star rating='4']
  • Affordability [star rating='3.8']

hygger HG-925 Final Thoughts

"Overall happy."

At this time I highly recommend this product. I wouldn't buy any other heater, unless one of these stops working. The controller is easy to use, very accurate and reliable. Personally for me the housing doesn't bother me. So if you set it to 78 degrees, the heater will not kick on until it reads 76. --Temperature adjustment labeling is on top rather than on the rod. The heater is being used in a 40 gallon breeder.

Overall Score
4.3

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

5. 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)

6. 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)

7. Famus Aquarium Fish Tank Heater Protective Case Detachable Designed Cover with Suction Cups(42.5 cm)...

Famus First Impressions

"Seems very well built."

It is a bonus that the heater is titanium. If the blue light is flashing it means the heater is not fully submersible. Once attached to the tank wall I've had no issues with it coming off. Pressing and holding the button for 5 seconds changes it from F to C readouts. There is a misconception on the internet that the heater isn't fully submersible. I like to keep it at 72 and from my thermometer it is reading at exactly 72. You don't have to worry about wide temperature swings with this unit.

  • Famus Aquarium Fish Tank Heater Protective Case Detachable Designed Cover with Suction Cups(42.5 cm)
  • Manufacture: Famus
  • Editor's Impressions Of The Famus
  • Heat Quality [star rating='2.9']
  • Quality [star rating='3.4']
  • Value For Money [star rating='4']
  • Affordability [star rating='2.5']

Famus Final Thoughts

"Easy to unpack."

This heater warmed it right up and now my Betta and guppies are more active. My heater is fully submerged underwater and works perfectly fine. I bought a similar one at the pet store and it barely worked. The temperatures are pretty accurate. Temperature is slightly off by running a little warmer. I use a 50 for a 5 gal and a 10 gal tank. I got this heater for my 55 gallon aquarium.

Overall Score
3.0

[star rating="3"]
(1 Points)

8. ViaAqua 200-Watt Quartz Glass Submersible Heater with Built-In Thermostat

User Ratings: 74 5

ViaAqua VA 200Q First Impressions

"Temperature!"

Personally for me the housing doesn't bother me. It took me only two tries to get it to the correct temperature. Easy enough to let it run all the time. I left seller feedback yesterday but have yet to hear from the seller. Come on Fluval, expect better from you. This heater is NOT fully submersible. I had a thermometer on opposite side of tank and the heater was dead on true.

  • ViaAqua 200-Watt Quartz Glass Submersible Heater with Built-In Thermostat
  • High quality quartz glass
  • Fully-submerisble
  • Visible temperature setting
  • For use in fresh or saltwater aquariums
  • Manufacture: Commodity Axis
  • Product Dimensions: 1.13 x 1.13 x 12.5 inches; 9.44 Ounces
  • Editor's Impressions Of The ViaAqua VA 200Q
  • Heat Quality [star rating='4.7']
  • Quality [star rating='4.7']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

ViaAqua VA 200Q Final Thoughts

"I do recommend."

I got a hold of Amazon, who put me in touch with the seller. The controller is easy to use, very accurate and reliable. I got this heater for my 55 gallon aquarium. And kids love pushing all sorts of buttons. And I get to keep the first one I bought! I bought a similar one at the pet store and it barely worked. The design is sleek and modern looking.

Overall Score
4.5

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

9. BoTaiDaHong 35L Aquarium Fish Tank Shrimp Water Chiller 10-40℃ Temperature Heater Cooler Set LCD D...

BoTaiDaHong First Impressions

"No issues."

Would be great to be able to tune that to. Keeps the temperature within 1 degree of what you set it to at all times. I got this heater for my 55 gallon aquarium. You don't have to worry about wide temperature swings with this unit. I adjusted the set temperature a little lower to be more in the range I wanted. I wouldn't buy any other heater, unless one of these stops working. They promptly fixed the issue without any delays or drama.

  • BoTaiDaHong 35L Aquarium Fish Tank Shrimp Water Chiller 10-40℃ Temperature Heater Cooler Set LCD Display AC 110V Adjustable Temperature Aquarium Tool 100W Fish Tank Cooling
  • 【Specification】Circulating Water Pump Flow: 1-3L/Min Suitable Range: Max.pump lift <3M Voltage: 110V Power: 100W Cooling Water Capacity: ≤ 35L Inner Size of Hose: 8mm
  • 【Save energy】The fish tank water cooler adopts micro computer and semiconductor for cooling, high efficient and low power consumption.
  • 【Application】Used with water pump and hose. Suitable for all kinds of cold water tanks.
  • 【Package included】1 X Power Adapter 1 X Power Line 2 X Hose Buckles 1 X Aquarium Water Chiller 1 X 2M Length Hose 1 X Water Pump
  • 【Shipment】We ship directly from the US warehouse.about 5-7 business days to delivery. We have a Professional Customer Service Team to Reply You within 24 hours.If you have any questions or concerns, Feel free to contact us!We will always stand behind our products and will provide the best suitable solutions for you
  • Manufacture: BoTaiDaHong
  • Editor's Impressions Of The BoTaiDaHong
  • Heat Quality [star rating='5']
  • Quality [star rating='4.9']
  • Value For Money [star rating='5']
  • Affordability [star rating='4']

BoTaiDaHong Final Thoughts

"Amazing customer service."

The setting always stayed the same. Awesome chiller, perfect for Hydroponics. Takes a little while to drop the temps if it is hot in the garage. It just cycles through to 93f and starts over. I hope these suction cups work very well. This this is amazing and is worth the money. We received the chiller promptly and put it into use.

Overall Score
5.0

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

10. Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 65 Gallon Fish Tank (300W for ...

User Ratings: 59 10

HITOP-Fish First Impressions

"This heater is excellent."

Will update my review if any changes occur. But my guys don't read them and don't listen! The heater is being used in a 40 gallon breeder. Once I opened the box i noticed the quality of the construction. Personally for me the housing doesn't bother me. Ick for instance detaches from fish at 86 degrees and dies at 89. Also I like how it shows both the current temperature and the set temperature.

  • Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 65 Gallon Fish Tank (300W for 25~65gallon)
  • Explosion Proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals.
  • Application:300W water heater is suitable for 20 – 50 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 10-slot multi-branched heating wire ceramic frame, shorter length, 11*1*1 in(27*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: 11 x 1 x 1 inches; 11.22 Ounces
  • Editor's Impressions Of The HITOP-Fish
  • Heat Quality [star rating='3.1']
  • Quality [star rating='4.1']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='5']

HITOP-Fish Final Thoughts

"9 degrees."

Would be great to be able to tune that to. But I am single and don't have to worry about this. --The heater itself is a bit shorter if your tank is a short one. I recieved this product without the instructions or the added thermometer. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. Keeps the temperature within 1 degree of what you set it to at all times. I like the fact that it comes with a digital thermometer.

Overall Score
4.1

[star rating="4.1"]
(109 Points)

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