Editor's Choice - Our Favorite Fluval Aquarium Heaters

1. Fluval M Submersible Heater

User Ratings: 80 3

Fluval A782 First Impressions

"The seller was wonderful."

I think it works well to not stand out like other heaters. If the water runs low or air gets in the heater shuts off. I have only had minor problems with the suction cups. They promptly fixed the issue without any delays or drama. This has the best controller that I have found on the market. I will be ordering more of these in the future. This is a powerful heater that holds temperature very well.

  • Fluval M Submersible Heater
  • Aquarium heater that blends into the aquarium environment with built-in reflective technology that mirrors the surrounding colors
  • Computer-calibrated thermostat and easy-to-adjust temperature control dial
  • Shock resistant Borosilicate glass and high density ceramic heat sick
  • Easy to install with slim profile tube for easy placement
  • 100-watt heater suitable for freshwater and saltwater aquariums up to 30 gallons with a 3-year warranty
  • Quality heater made in Europe using superior components and construction
  • Sleek and compact
  • Ideal for 100 L (30 US gal) aquariums
  • Manufacture: Fluval
  • Product Dimensions: 1.8 x 4.8 x 14.8 inches; 8.82 Ounces
  • Editor's Impressions Of The Fluval A782
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Fluval A782 Final Thoughts

"5 or even."

I will be ordering more of these in the future. I will definitely be buying another one for my other tanks at bigger one. It does blend well in some setups and may look bulky in others. We would consider a replacement and then we would return the defective unit. Thanks for the great customer service! Pressing and holding the button for 5 seconds changes it from F to C readouts. My marina heater takes a few hours.

Overall Score
4.7


(1578 Points)

Peoples Choice - Other Highly Rated Fluval Aquarium Heaters

2. Fluval Edge 25W Compact Heater

User Ratings: 66 14

Fluval A756 First Impressions

"I got the 100 watt one."

Or better yet, conceal it to the back corner. They promptly fixed the issue without any delays or drama. I like to keep it at 72 and from my thermometer it is reading at exactly 72. It just cycles through to 93f and starts over. Come on Fluval, expect better from you. This is a powerful heater that holds temperature very well. I recieved this product without the instructions or the added thermometer.

  • Fluval Edge 25W Compact Heater
  • Provides even and efficient heat distribution
  • Ideal for use with the Fluval Edge Aquarium
  • Maintains set temperature of 78 degrees Farenheit
  • Polymer exterior prevents breakage
  • Manufacture: Fluval
  • Product Dimensions: 2 x 1 x 11 inches; 6.49 Ounces
  • Editor's Impressions Of The Fluval A756
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Fluval A756 Final Thoughts

"Until the next time."

So when I first received it it didn't work and I was very disappointed. The heater is super thin and the reflective surface is interesting. Two inches above that is a waterline for maximum. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. So when I first received it it didn't work and I was very disappointed. Per my thermometers, they are all staying constant. I will definitely be buying another one for my other tanks at bigger one.

Overall Score
4.1


(264 Points)

3. Fluval A767 Tronic Heater

User Ratings: 63 8

Fluval A767 First Impressions

"Very easy and accurate."

The temperature lights up so it's very easy to read. No biggie, but annoying nonetheless. Awesome chiller, perfect for Hydroponics. Awesome chiller, perfect for Hydroponics. The heater is easy; turn the dial to set temp and plug in. If the water runs low or air gets in the heater shuts off. I emailed the email it says to and told them.

  • Fluval A767 Tronic Heater
  • Fully submersible, easy to use electronic aquarium heater
  • Patented thermal sensor continuously samples water temperatures
  • Fast heat technology quickly achieves optimum temperature
  • Advanced circuitry for safe and reliable heating
  • 100-watt electronic heater, 13 inches long
  • Manufacture: Rolf C. Hagen (USA) Corp.
  • Product Dimensions: 12 x 4 x 7 inches; 11.2 Ounces
  • Editor's Impressions Of The Fluval A767
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Fluval A767 Final Thoughts

"I like this heater."

I noticed my old hygger heater beginning to fail and my wife ordered this one. The heater is super thin and the reflective surface is interesting. After several weeks of running the heater. Come on Fluval, expect better from you. Takes a little while to drop the temps if it is hot in the garage. We wish the controls were available in Farenheit also to make things a little easier. The heater is being used in a 40 gallon breeder.

Overall Score
4.2


(40 Points)

4. Aquatop Quartz Glass Submersible Heaters (50W-300W)

User Ratings: 67 6

AquaTop GH-50W First Impressions

"Works as intended."

My fish likes to get close to it and he has never been hurt by it. You don't have to worry about wide temperature swings with this unit. I like to keep it at 72 and from my thermometer it is reading at exactly 72. This product came in the nick of time! I recieved this product without the instructions or the added thermometer. It's pretty noticeable, but I don't really care. --The heater itself is a bit shorter if your tank is a short one.

  • Aquatop Quartz Glass Submersible Heaters (50W-300W)
  • Tank capacity: up to 13-gallon
  • Voltage/freq: 110-120volt/60hertz
  • Power: 50-watt
  • Easy to use temperature setting
  • Fully submersible
  • Manufacture: Aquatop, Inc.
  • Product Dimensions: 9 x 1.5 x 1.5 inches; 10.41 Ounces
  • Editor's Impressions Of The AquaTop GH-50W
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

AquaTop GH-50W Final Thoughts

"Works great."

I'm in the process of setting up for tanks. Also were nice along the whole process. The line is there due to regulations in certain countries. I went ahead and went with the the larger 300W for my 45 gallon. Ick for instance detaches from fish at 86 degrees and dies at 89. This is a great heater that is very easy to set up and program. We would consider a replacement and then we would return the defective unit.

Overall Score
4.4


(235 Points)

5. 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
  • Quality
  • Value For Money
  • Affordability

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


(8 Points)

6. Uniclife 200 Watt Aquarium Heater with Thermometer, Fish Tanks Heater of 50 Gallon

User Ratings: 74

Uniclife First Impressions

"Peace out."

Pressing and holding the button for 5 seconds changes it from F to C readouts. Keeps the temperature within 1 degree of what you set it to at all times. It's only been set up for a month we'll see how well it does in a few months. The setting always stayed the same. I was amazed how quickly I got to my temperature I need it 78 degrees. I use a 50 for a 5 gal and a 10 gal tank. The temperatures are pretty accurate.

  • Uniclife 200 Watt Aquarium Heater with Thermometer, Fish Tanks Heater of 50 Gallon
  • Can be used in both freshwater and saltwater, applicable for 25-50 gallon fish tanks.
  • Adjust temperature by top red knob, range 68°F-93°F. Tube temperature displayed.
  • Water-tight of IP68 sealing. 2mm shatterproof quartz housing, bottom clash-proof cover. (NOTICE: Can’t be used even just cracked a tiny bit, pls contact us for replacement)
  • Measurement 11.2" x 1" (L x D). Only allowing for vertical or horizontal installment.
  • Package include aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1.
  • 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
  • Quality
  • Value For Money
  • Affordability

Uniclife Final Thoughts

"One word of caution."

You don't have to worry about wide temperature swings with this unit. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. But I am single and don't have to worry about this. It is a bonus that the heater is titanium. I have 3 of the Fluval heaters, in various sizes. This heater is NOT fully submersible. I would definitely recommend this product.

Overall Score
4.7


(5 Points)

7. 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)

8. PULACO 25W Mini Aquarium Heater, Betta Fish Tank Heater for 1-5 Gallon Small Fish Tanks

User Ratings: 58 14

PULACO PL-168 First Impressions

"Overall happy."

It's pretty noticeable, but I don't really care. Two inches above that is a waterline for maximum. The temperatures are pretty accurate. No biggie, but annoying nonetheless. It's pretty noticeable, but I don't really care. I noticed my old hygger heater beginning to fail and my wife ordered this one. I have only had minor problems with the suction cups.

  • PULACO 25W Mini Aquarium Heater, Betta Fish Tank Heater for 1-5 Gallon Small Fish Tanks
  • ★【Quartz glass heater】: The heating device is made of heat-resistant quartz glass, explosion-proof and strong thermal conductivity. It can be used for 1-5 gallon glass or acrylic fish tanks.
  • ★【Easy to operate】: This heater is different from traditional heaters. It is designed with an external controller for temperature display and temperature adjustment, which can freely adjust the temperature you need (68°F-93°F).
  • ★【Intelligent temperature control】: The heater effectively maintains the temperature you preset before, and stops heating when the water temperature reaches the preset temperature, and restarts heating when the water temperature is lower than the preset temperature by 2-3°F.The red light on the LED screen indicates that the heater is heating, and the blue light indicates that the heater has finished heating and is in a constant temperature state.
  • ★【Note】: The heater needs to be fully submerged, the external controller is not waterproof, and children need to be used under the supervision or guidance of adults.
  • ★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
  • Plug in, the controller LED lights on, press the button and switch it continuously until the LED display shows your expecting temperature (From 68~93℉ ), and wait 3 seconds for system confirmation, then heater will start heating up to your preset temperature.
  • Red lights means the heater is on heating mode, when heater heating up to the preset temperature, blue lights on, and heater will stop heating (Restart heating when temperature less than preset temperature)
  • Operation for example: Plug in and LED display shows preset temperature 68℉, you want adjust it to 78℉, then press the button 10 times continuously, LED display will shows 78℉, and wait 3 seconds flashing, then setting fishined, heater will start heating from 68℉ to 78℉.
  • Manufacture: PULACO
  • Product Dimensions: 3.34 x 1.77 x 6.7 inches; 4.32 Ounces
  • Editor's Impressions Of The PULACO PL-168
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

PULACO PL-168 Final Thoughts

"What a long."

It just cycles through to 93f and starts over. Bought it as a chiller for the k40 CO2 laser. I had a thermometer on opposite side of tank and the heater was dead on true. This has the best controller that I have found on the market. The cover over the heating tubes is great, the turtles claws can't damage the tube. It does blend well in some setups and may look bulky in others. After several weeks of running the heater.

Overall Score
4.0


(38 Points)

9. Orangelight Aquarium Thermostat Heater Submersible Fish Tahk Heater with Adjust Knob Thermostat 2 Su...

User Ratings: 76 3

Orangelight First Impressions

"Long heater."

It comes with a hanging kit and can be secured on the edge of the tank. There is no protection from it banging on the glass tank. This heater works, but the dial it isn't very accurate. This is a powerful heater that holds temperature very well. Bought it as a chiller for the k40 CO2 laser. I'm not a big fan of the big glass tubes. There is a misconception on the internet that the heater isn't fully submersible.

  • Orangelight Aquarium Thermostat Heater Submersible Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups
  • 【100 Watt Heater】This Aquarium heater is suitable for 15 to 25 gallons aquariums, Length - 10.5”, voltage 110-120V, power cord is 4.0 ft, please choose the right wattage aquarium heater according to your Aquarium.
  • 【Premium Shatterproof Glass】Made of shatterproof glass and BPA-free plastic. Orangelight aquarium heaters are fully submersible and safe for fish without any toxic substance producing.
  • 【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.
  • 【Fresh and Saltwater】Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • 【Wide Compatibility】Applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems
  • Made of shock resistant and shatter proof glass. Made of PTC element, an oxide ceramic, won't get fired, or broken like glass aquarium heaters, has longer service life and much safer than normal aquarium heaters.
  • 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.
  • Manufacture: Orangelight
  • Product Dimensions: 8.2 x 1.15 x 1.15 inches; 4.16 Ounces
  • Editor's Impressions Of The Orangelight
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Orangelight Final Thoughts

"Love this heater!"

This is only day one though, so I shall keep an eye one it. Seems to keep the temp n the tank fairly regular. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. I have it set to 81F to get a 77F water temp. The heater is easy; turn the dial to set temp and plug in. It does blend well in some setups and may look bulky in others. It is a bonus that the heater is titanium.

Overall Score
4.6


(84 Points)

10. 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)

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