Editor's Choice - Our Favorite SunGrow Aquarium Heaters

1. 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
  • Quality
  • Value For Money
  • Affordability

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


(71 Points)

2. YukiHalu Small Size Submersible Aquarium Heater, 1℉ Accuracy, Mini Fish Tank Heater 50W 100W with ...

User Ratings: 70

YukiHalu First Impressions

"There was only~0."

It is a bonus that the heater is titanium. No biggie, but annoying nonetheless. I have a 10gallon tank that was at 72 degrees. I had a thermometer on opposite side of tank and the heater was dead on true. The heater protector was very heavy plastic and slim lined which is great. They shipped us the upgraded version that also heats! I like the fact that it comes with a digital thermometer.

  • YukiHalu Small Size Submersible Aquarium Heater, 1℉ Accuracy, Mini Fish Tank Heater 50W 100W with Built-in Thermometer, Dual LED Temperature Display, External Temperature Controller
  • 【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 93°F. This heater suitable for both saltwater and freshwater. The rated voltage is 100-130V.
  • 【1℉ Accuracy & Intelligent Frequency Conversion】Thanks to advanced Intelligent Frequency Conversion Technology, the temperature accuracy is up to 1℉. If the temperature is lower than the target value of 0.2°F, the heater works at a Variable frequency to keep the temperature constant. If the water temperature is lower than the target temperature of 1°F, the heater will work at full power. Compare to traditional heater, this new technology will cut down 49% electricity bill for you.
  • 【Easy to adjust the temperature without wet your hands】The 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.
  • 【Easy to Read & Built-in Thermometer】Dual 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.
  • 【Safety & 4 Protections】Electric Leakage protection / Overheating protection / Dry running protection / Out of water protection. Sturdy engineering plastic shield, scalding resistant and explosion resistant. 30 days full refund, 12-months warranty.
  • Press and hold the button in external controller for more than 3 seconds to unlock the key
  • Short-press the button once, the temperature number will increase 1℉. Keep short-pressing the button until the target temperature is reached. It is a cyclic adjustment
  • Built-in Thermometer
  • Manufacture: YukiHalu
  • Product Dimensions: 2.7 x 3.3 x 1.2 inches; 9.52 Ounces
  • Editor's Impressions Of The YukiHalu
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

YukiHalu Final Thoughts

"They contacted me."

The suction cups are large, high quality and seem to stick great. It is a bonus that the heater is titanium. Per my thermometers, they are all staying constant. Would be great to be able to tune that to. I left seller feedback yesterday but have yet to hear from the seller. The heater protector was very heavy plastic and slim lined which is great. It does blend well in some setups and may look bulky in others.

Overall Score
4.6


(10 Points)

3. Hydor Slim Heater for Bettas, Bowls and Aquariums

User Ratings: 52 13

Hydor T20201 First Impressions

"And I am glad I did."

I think it works well to not stand out like other heaters. Now, both points are clear on the package instructions. Temperature is slightly off by running a little warmer. My heater is fully submerged underwater and works perfectly fine. It's pretty noticeable, but I don't really care. If the blue light is flashing it means the heater is not fully submersible. I contacted the manufacturer and they sent me a new unit in less than a week!

  • Hydor Slim Heater for Bettas, Bowls and Aquariums
  • Helps guarantee your fish a healthy life by promoting the ideal water temperature.
  • Plug and Play, No temperature to set
  • Can be positioned under gravel
  • No glass components
  • Heater is UL listed
  • Manufacture: Hydor USA, Inc.
  • Product Dimensions: 6.5 x 0.25 x 3.25 inches; 4 Ounces
  • Editor's Impressions Of The Hydor T20201
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Hydor T20201 Final Thoughts

"Overall happy."

The temperatures are pretty accurate. The temperature gauge is fairly accurate in my 55 gallon tank. It took me a few days slowly turning the dial up to finally get it where I wanted. The heater protector was very heavy plastic and slim lined which is great. They promptly fixed the issue without any delays or drama. I adjusted the set temperature a little lower to be more in the range I wanted. Sometimes you may have to tinker around with the dial.

Overall Score
3.9


(1510 Points)

4. 300w 150w 50w Submersible Aquarium Heater Auto Thermostat Heater with Suction,LED Small Mini Tempera...

User Ratings: 59 16

FTSTC First Impressions

"One word of caution."

The temperature gauge is fairly accurate in my 55 gallon tank. 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. I had a thermometer on opposite side of tank and the heater was dead on true. This is a powerful heater that holds temperature very well. Keeps the water consistent and it's easy to adjust! I confirm it with my cooking digital probe thermometer.

  • 300w 150w 50w Submersible Aquarium Heater Auto Thermostat Heater with Suction,LED Small Mini Temperature Display Aquarium Fish Tank Heater for Fish Tank Water
  • UPGRADED MORE DURABLE VERSION: Provided the best warm area to your fish in the cold winter.Keeps improving best aquarium heater for your fish tank, after collecting so many comments from customers, we upgrade its function and life time, now it works more continuously and accurately.
  • MORE SAFETY & HIGH QUALITY: This upgraded aquarium heater now updated for more durable Quartz Glass, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger protective container updated for Anti-melting anti punching double sealed material, it is scald-preventing for your pets and your safety.
  • FREE THERMOMETER: 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, suitable both for fresh and salt water.
  • TEMPERATURE CONTROL: Aquarium heater works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably. Setting the temperature by the red knob on the top with range is 64°F - 94°F.High accuracy(±1°F)
  • APPLICABLE TANK SIZE: Our submersible aquarium heaters are perfect designed for different size tank, 50W for 5-10 gallon; 100W for 10-30 gallon; 300W for 30-85 gallon, please choose the suitable power for your tank. And we also recommend to position it near a strong water flow, the outlet of a power filter is ideal, so that the whole aquarium are in the same temperature.
  • Manufacture: FTSTC
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The FTSTC
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

FTSTC Final Thoughts

"I'll try once more."

The heater is easy; turn the dial to set temp and plug in. We wish the controls were available in Farenheit also to make things a little easier. I was worried about the quality but I am thoroughly impressed with this heater! I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. When i installed them, i let them sit in the tanks without power for 6-24 hours. This is a great heater that is very easy to set up and program. Would be great to be able to tune that to.

Overall Score
3.9


(1234 Points)

5. Ehm Heater Jager 300w

User Ratings: 72 7

Eheim First Impressions

"Works fine."

But I am single and don't have to worry about this. I noticed my old hygger heater beginning to fail and my wife ordered this one. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Well I bought a second one took me only one trying to get the right temperature. So if you set it to 78 degrees, the heater will not kick on until it reads 76. No biggie, but annoying nonetheless. I went ahead and went with the the larger 300W for my 45 gallon.

  • Ehm Heater Jager 300w
  • Jager Trutemp Aquarium Heater 20" 300 Wt
  • Manufacture: EHEIM
  • Editor's Impressions Of The Eheim
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim Final Thoughts

"Quality was amazing."

If the water runs low or air gets in the heater shuts off. This heater warmed it right up and now my Betta and guppies are more active. We would consider a replacement and then we would return the defective unit. The temperature has been holding all day, even in a colder room. It is a bonus that the heater is titanium. It just cycles through to 93f and starts over. Seems to keep the temp n the tank fairly regular.

Overall Score
4.4


(53 Points)

6. auomii Mini Submersible Aquarium Heater, 50W/100W Small Fish Tank Heater, Built-in Thermometer, 2 LE...

User Ratings: 65 13

auomii First Impressions

"Highly recommended."

Well I bought a second one took me only one trying to get the right temperature. I was worried about the quality but I am thoroughly impressed with this heater! Beware, but we are hoping for a good outcome! I think it works well to not stand out like other heaters. You don't have to worry about wide temperature swings with this unit. I got this heater for my 55 gallon aquarium. At this time I highly recommend this product.

  • auomii Mini Submersible Aquarium Heater, 50W/100W Small Fish Tank Heater, Built-in Thermometer, 2 LED Temperature Display, External Temperature Controller, Intelligent Frequency Conversion
  • 【Small Size Heater】 AUOMII 100W small size aquarium heater is suitable for 1~20 gallon mini fish tanks, and easy to hide in the tank. Temperature can be accurately adjusted from 64~93°F. This heater suitable for both saltwater and freshwater. The rated voltage is 100-130V. Easy to set temperature, Easy to read temperature, Easy to install
  • 【Accuracy is up to 1℉】Temperature accuracy is up to 1℉ as advanced Intelligent Frequency Conversion Technology. If the temperature is lower than the target value of 0.2°F, the heater works at a variable frequency to keep the temperature constant. The working frequency will be changed according to temperature variation. If the water temperature is lower than the target temperature of 1°F , the heater will work at full power. The temperature curve is almost a line
  • 【Safety and Reliable】3 pin plug with ground wire, connect the water to ground directly, no risk of electric shock. 4 protections: Leakage protection / Over heating protection / Dry running protection / Out of water protection. Sturdy engineering plastic shield, scalding resistant and explosion resistant. Using touch control button, easy to set and read the temperature. 3 Strong suction cups, easy to install
  • 【Built-in Thermometer】Water temperature will be displayed on both the heater and external temperature controller in real time. Dual built-in temperature sensor. Dual LED display. High accuracy temperature as the temperature sensor is contact with water directly and have excellent heat conduction
  • 【30days refund 12 months replacement】Your purchase today is completely RISK-FREE. If you are not completely satisfied for our device, let us know for a full refund. Why wait? Get it today
  • 100W aquarium heater X1
  • suction cups X3
  • instruction X1
  • Manufacture: auomii
  • Product Dimensions: 2.7 x 2.9 x 1.2 inches; 10.23 Ounces
  • Editor's Impressions Of The auomii
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

auomii Final Thoughts

"I got the 100 watt one."

Or better yet, conceal it to the back corner. I left seller feedback yesterday but have yet to hear from the seller. I will be ordering more of these in the future. Beware, but we are hoping for a good outcome! I will definitely be buying another one for my other tanks at bigger one. I like to keep it at 72 and from my thermometer it is reading at exactly 72. After several weeks of running the heater.

Overall Score
4.1


(19 Points)

7. DECJ Submersible Aquarium Heater, 25W/50W/100W/150W/200W/ Fish Tahk Heater, with Adjust Knob Thermos...

DECJ First Impressions

"Very quick shipping."

If the blue light is flashing it means the heater is not fully submersible. I bought a similar one at the pet store and it barely worked. This has the best controller that I have found on the market. They shipped us the upgraded version that also heats! I tested it by unplugging and replugging it. This is only day one though, so I shall keep an eye one it. The bonus digital thermometer it came with has been super helpful, and is accurate.

  • DECJ Submersible Aquarium Heater, 25W/50W/100W/150W/200W/ Fish Tahk Heater, with Adjust Knob Thermostat 2 Suction Cups and Free Thermometer, Suitable for Marine Saltwater and Freshwater,150watt
  • IP68 WATERPROOF: This fish tank heater is waterproof, must be fully submerged in water when working, stick it with suctions horizontally or vertically onto the tank side near the water intake or where the way of water flow. Please unplug the power supply when cleaning the fish tank or aquarium water changes.
  • LED DISPLAY: Electronic Thermostat accurate to +/- 1 ℃, no need to buy another thermometer, Clearly show the temperature you set, the red indicator light is on when it start to heat your tank, and the blue indicator is on when tank reaches the temperature you regulates.
  • OVER-HEATED & SAFTY PROTECTION: When water temperature reaches to set temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. When lack of water, the heater will stop working to prevent dry burning.
  • TEMP ADJUSTABLE(℃/℉ Switchable): The temperature adjustable range is from 68℉ to 94℉ (20℃-34℃), which is suitable for different aquariums,hydroponics growing system,various ornamental fish and amphibious turtles. Essential for arowana, aquarium fish, fish ponds, and turtles.
  • UNIQUE WATER CHANGER: The water filter has a built-in porous filter to prevent fish or water grass and sand from being sucked out; the water control valve can adjust the water flow size, which is conducive to cleaning relatively small sand and gravel.
  • Manufacture: Aquarium Heaters & Chillers
  • Editor's Impressions Of The DECJ
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

DECJ Final Thoughts

"Love this heater!"

My marina heater takes a few hours. They shipped us the upgraded version that also heats! And I get to keep the first one I bought! Takes a little while to drop the temps if it is hot in the garage. The heater is super thin and the reflective surface is interesting. I am very happy with this purchase. I like the fact that it comes with a digital thermometer.

Overall Score
5.0


(1 Points)

8. Eheim Thermocontrol e50 Heater

User Ratings: 77 23

Eheim AEH3632090 First Impressions

"Works just as advertised!"

This is a great heater that is very easy to set up and program. It is a bonus that the heater is titanium. Beware, but we are hoping for a good outcome! When i installed them, i let them sit in the tanks without power for 6-24 hours. It's only been set up for a month we'll see how well it does in a few months. I appreciate the exterior temp readout and control module. I got this heater for my 55 gallon aquarium.

  • Eheim Thermocontrol e50 Heater
  • 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: 50W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 6. 5-15 Gallons Height: 9. 2" Power Cord Length: 5. 5'
  • Item Package Height: 3.0
  • Item Package Length: 20.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3632090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3632090 Final Thoughts

"So far so good."

I appreciate the exterior temp readout and control module. Seems to keep the temp n the tank fairly regular. I left seller feedback yesterday but have yet to hear from the seller. Also were nice along the whole process. I used to try those other cheap heaters sold on amazon. The temperatures are pretty accurate. I would definitely recommend this product.

Overall Score
4.1


(6 Points)

9. Periha 300W Aquarium Heater Fast Heating Submersible Fish Tank Heater with 2 Suctions Black Safe Pro...

User Ratings: 67 6

Periha First Impressions

"Temperature!"

The bonus digital thermometer it came with has been super helpful, and is accurate. This has been in my fish tank for a few months now and it's been absolutely perfect! Bought it as a chiller for the k40 CO2 laser. There is no protection from it banging on the glass tank. This product came in the nick of time! Also were nice along the whole process. I have 3 of the Fluval heaters, in various sizes.

  • Periha 300W Aquarium Heater Fast Heating Submersible Fish Tank Heater with 2 Suctions Black Safe Protective Case Adjustable Temperature Knob Suitable for 52 to 80 Gallons Aquariums
  • SAFE & RELIABLE: This Heater adopts an explosion-proof quartz tube, not afraid of occasional quench and heat. Double waterproof design, high-quality waterproof material, waterproof grade IPX8. Preventing your pet fish be electrocuted or burned due to leakage of the product. Keep your fish safe and warm.
  • ACCURATE TEMP CONTROL: Use the inner temperature controller on the top to set and adjust the desired temperature 20°C-34°C(68℉-93.2 ℉). Temperature error within ± 1 ℃. You can choose the coziest temperature for your fish.
  • FIT 80 GALLON TANKS: 300W power output, this heater is suitable for max 80 gallons aquariums and tanks, and it can be used in freshwater and saltwater. The temperature in the aquarium will rise to the ideal state soon.
  • FULLY SUBMERSIBLE: The heater must fully submersible in the water with 2 suckers. When heated for the first time, pls wait for 10-15 minutes to let the internal temperature adapt to the actual water temperature in the tank, then connect to the power supply.
  • SATISFACTORY WARRANTY: We offer 30 days full refund and 1-year limited warranty, any questions pls contact us first, we will respond within 24 hours!
  • Manufacture: qingfengdianqi
  • Product Dimensions: 1.2 x 1.2 x 15 inches; 13.62 Ounces
  • Editor's Impressions Of The Periha
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Periha Final Thoughts

"Works just as advertised!"

And I get to keep the first one I bought! I use a 50 for a 5 gal and a 10 gal tank. It's pretty noticeable, but I don't really care. And I get to keep the first one I bought! You don't have to worry about wide temperature swings with this unit. But I am single and don't have to worry about this. Well I bought a second one took me only one trying to get the right temperature.

Overall Score
4.3


(40 Points)

10. Aqueon Preset Heater

User Ratings: 71 7

Aqueon 100106252 First Impressions

"They contacted me."

All seem to vary between 1-2 degrees of each other which doesn't concern me much. I use this little heater for my 10 gallon quarantine tank. This heater warmed it right up and now my Betta and guppies are more active. This product came in the nick of time! You program it for temperature you want your tank to be. After several weeks of running the heater. Beware, but we are hoping for a good outcome!

  • Aqueon Preset Heater
  • Preset to 78 degrees, appropriate for most tropical fish.
  • Fully submersible, shatter-resistant construction
  • Automatic safety shut-off avoids overheating and damage
  • LED indicator light displays when actively heating
  • 1 year warranty
  • 100 watt is recommended for 20 and 30 gallon aquariums
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 3.5 x 1.5 x 7.75 inches; 7.52 Ounces
  • Editor's Impressions Of The Aqueon 100106252
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqueon 100106252 Final Thoughts

"Amazing customer service."

The setting always stayed the same. After several weeks of running the heater. Am a totally sold customer and would recommend them to anybody! I hope these suction cups work very well. You don't have to worry about wide temperature swings with this unit. It's pretty noticeable, but I don't really care. It took me only two tries to get it to the correct temperature.

Overall Score
4.4


(764 Points)

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