Editor's Choice - Our Favorite SeaELF Aquarium Heaters

1. Aquarium Heater, 100W 300W 500w Submersible Fish Tank Heater with Titanium Tube Thermostat System LE...

User Ratings: 73 8

SeaELF First Impressions

"Temperature!"

My fish likes to get close to it and he has never been hurt by it. I like the fact that it comes with a digital thermometer. I will definitely be buying another one for my other tanks at bigger one. So when I first received it it didn't work and I was very disappointed. I will be ordering more of these in the future. I was worried about the quality but I am thoroughly impressed with this heater! Bought it as a chiller for the k40 CO2 laser.

  • Aquarium Heater, 100W 300W 500w Submersible Fish Tank Heater with Titanium Tube Thermostat System LED Digital Play and Remote Controller for 50-80 Gallon Tank
  • Premium Titanium Alloy Material & pinpoint probe : The seaELF aquarium heater made by premium titanium alloy, shatterproof, anti explosion, anti cracking and anti-corrosion than quartz glass aquarium heater and stainless steel tank heater, good for fresh water and sea water. The precise sensing probe on the top of heater for pinpoint temperature and double seal design to ensure safe operation. The heating tube with CE, RoHS, FC approved and the plug with UL approved.
  • Remote Controller & LCD Display : Update design with remote controller and LCD display , easy to setting and adjusting the aquarium heater’s temperature by remote controller and easy know the tank’s temperature by the LCD display, no need to buy extra temperature and wet your hands to setting the temperature again. (the remote is non waterproof, please keep it away from water).
  • Intelligent Overheating Protection & Lack-of Water Protection : With double sensing probe on the top, it will accurate detect the temperature and water, once overheating or the water cant cover the top of this aquarium heater, it will automatic power-off, prevent electric shock & burns and keep you and your fish safe. (E2,E8 display are mean overheating, please increase the water circulation when it happens)
  • Intelligent Thermostat Heating System :This aquarium heater made with intelligent thermostat heating system, it will heating automatically once the water temperature is less than the setting temperature and stop heating once it reached the setting temperature. Keep the aquarium water in a same temperature environment to protect fishes, amphibians, turtles and so on.(Please install it near a strong water flow).
  • 100% satisfaction : Just to show you how confident we are that your fish will enjoy the aquarium water heater, we are giving you a 6 month money-back guarantee, if there any problem when you install the heater or any un-satisfied with this product, please feel free to contact us for resend or refund, we will dealing with it within 48 hrs.
  • Manufacture: SeaELF
  • Editor's Impressions Of The SeaELF
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

SeaELF Final Thoughts

"Seems very well built."

This heater is NOT fully submersible. It took me a few days slowly turning the dial up to finally get it where I wanted. Keeps the water consistent and it's easy to adjust! And kids love pushing all sorts of buttons. Will update my review if any changes occur. No biggie, but annoying nonetheless. It's only been set up for a month we'll see how well it does in a few months.

Overall Score
4.4


(348 Points)

Peoples Choice - Other Highly Rated SeaELF Aquarium Heaters

2. Aquarium Heater, 100W 300W 500w Submersible Fish Tank Heater with Titanium Tube Thermostat System LE...

User Ratings: 73 8

SeaELF First Impressions

"Suction cups stick."

This does a great job at regulating the temp in my 10 gallon. I'm in the process of setting up for tanks. Also were nice along the whole process. I contacted the manufacturer and they sent me a new unit in less than a week! The temperature lights up so it's very easy to read. Personally for me the housing doesn't bother me. Thanks for the great customer service!

  • Aquarium Heater, 100W 300W 500w Submersible Fish Tank Heater with Titanium Tube Thermostat System LED Digital Play and Remote Controller for 50-80 Gallon Tank
  • Premium Titanium Alloy Material & pinpoint probe : The seaELF aquarium heater made by premium titanium alloy, shatterproof, anti explosion, anti cracking and anti-corrosion than quartz glass aquarium heater and stainless steel tank heater, good for fresh water and sea water. The precise sensing probe on the top of heater for pinpoint temperature and double seal design to ensure safe operation. The heating tube with CE, RoHS, FC approved and the plug with UL approved.
  • Remote Controller & LCD Display : Update design with remote controller and LCD display , easy to setting and adjusting the aquarium heater’s temperature by remote controller and easy know the tank’s temperature by the LCD display, no need to buy extra temperature and wet your hands to setting the temperature again. (the remote is non waterproof, please keep it away from water).
  • Intelligent Overheating Protection & Lack-of Water Protection : With double sensing probe on the top, it will accurate detect the temperature and water, once overheating or the water cant cover the top of this aquarium heater, it will automatic power-off, prevent electric shock & burns and keep you and your fish safe. (E2,E8 display are mean overheating, please increase the water circulation when it happens)
  • Intelligent Thermostat Heating System :This aquarium heater made with intelligent thermostat heating system, it will heating automatically once the water temperature is less than the setting temperature and stop heating once it reached the setting temperature. Keep the aquarium water in a same temperature environment to protect fishes, amphibians, turtles and so on.(Please install it near a strong water flow).
  • 100% satisfaction : Just to show you how confident we are that your fish will enjoy the aquarium water heater, we are giving you a 6 month money-back guarantee, if there any problem when you install the heater or any un-satisfied with this product, please feel free to contact us for resend or refund, we will dealing with it within 48 hrs.
  • Manufacture: SeaELF
  • Editor's Impressions Of The SeaELF
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

SeaELF Final Thoughts

"I like this heater."

Now, both points are clear on the package instructions. We received the chiller promptly and put it into use. Well I bought a second one took me only one trying to get the right temperature. The cover over the heating tubes is great, the turtles claws can't damage the tube. I use a 50 for a 5 gal and a 10 gal tank. My marina heater takes a few hours. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank.

Overall Score
4.4


(348 Points)

3. 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)

4. Submersible Aquarium Heater 100/300/500 Watt Fish Tank Heater with Dual Temperature Displays and Tem...

User Ratings: 74 12

BinChang First Impressions

"5 stars in my book!"

--Temperature adjustment labeling is on top rather than on the rod. What more could you ask for great job Hygger Duncan. --The heater itself is a bit shorter if your tank is a short one. The setting always stayed the same. So when I first received it it didn't work and I was very disappointed. Was very impressed with the quality of this heater. No biggie, but annoying nonetheless.

  • Submersible Aquarium Heater 100/300/500 Watt Fish Tank Heater with Dual Temperature Displays and Temp Controller Adjustable for Turtle Betta Fish Tank 5-130 Gallon
  • ❀【100 Watt Heater】This 100W is suitable for 5-25 gallons tank, heater length is 10.8 inches, power cord length is 47 inches+67 inches, please choose the right wattage aquarium heater according to our size chart.
  • ❀【External Temperature Controller】 This submersible aquarium heater is designed to control the temperature externally, which is convenient and safe for you to adjust temperature and no need to take the heater out from water and risk burning yourself.
  • ❀【Dual Temperature Displays】 It shows the water temp and set temp at the same time, helping you easily recognize and observe the temp change in real time even in the night!
  • ❀【High Quality】 It is made of shock resistant and shatter proof quartz for fresh or marine water. Besides, the heatproof cover will also protect you little fish from scalding.
  • ❀【PLEASE NOTE】 Aquarium heater should be fully submerged into the water. Please unplug the power supply when cleaning the fish tank, changing aquarium water or taking the heater out (and should let it cool in the water for a while before you take it out).
  • Manufacture: BinChang
  • Editor's Impressions Of The BinChang
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

BinChang Final Thoughts

"I have a betta in a 1."

Keeps the temperature within 1 degree of what you set it to at all times. The cover over the heating tubes is great, the turtles claws can't damage the tube. I will be ordering more of these in the future. I will be ordering more of these in the future. Now, both points are clear on the package instructions. Two inches above that is a waterline for maximum. Checked the accuracy of the heater with an infrared thermometer.

Overall Score
4.3


(36 Points)

5. UPMCT Aquarium Heater, 50W 100W 300W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob...

User Ratings: 62 12

UPMCT First Impressions

"Love this heater!"

It is safe and dependable and comes with a one year warranty. I was worried about the quality but I am thoroughly impressed with this heater! I dont know, and havent tried just yet. We wish the controls were available in Farenheit also to make things a little easier. Beware, but we are hoping for a good outcome! I dont know, and havent tried just yet. Come on Fluval, expect better from you.

  • UPMCT Aquarium Heater, 50W 100W 300W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob Thermostat, Suitable for 5 to 85 Gallons
  • 【Quality Assurance】High-purity thick quartz explosion-proof crystal tube is used on the surface, there will be no rust spots, causing heavy metal damage to the fish. The double sealing waterproof can also prevent electric leakage, the fish will not be electrocuted due to leakage of the product. A heating guard with a high suction cup is provided as a gift, and the fish will not be burnt due to the fish touching the aquarium heater. Keep your fish live in a carefree warmth at any time!
  • 【Wide Range Of Temperature Adjustment】Bimetallic material, precise temperature control. Adjustable temperature ranges from 68°F to 94°F(20°C - 34°C), and you can choose the coziest temperature for your fish. (The suitable temperature range for most tropical fish is 76°F to 80°F/24°C -27°C ). At the same time, a temperature sticker is attached to the fish tank, allowing you to intuitively detect temperature changes at any time, so that you can use it with more confidence.
  • 【Suitable For 5-85 Gallon Tanks】50W aquarium heater is suitable for a 5 to 15 gallon tank, 100W aquarium heater is suitable for a 15 to 25 gallon tank. 300W aquarium heater is suitable for a 50 to 85 gallon tank. It is suitable for fresh water and sea water! Please confirm the wattage, tank capacity and other details before purchasing to select the aquarium heater with appropriate wattage.
  • 【Easy To Install】Can be installed vertically or horizontally, but the aquarium heater must be completely submerged in water. We also recommend placing it near a strong water flow, where the outlet of the mains filter is ideal, so that the temperature of the entire aquarium is the same.
  • 【How To Use】Immerse the aquarium heater completely into the aquarium or tank, wait for 10-15 minutes to let the internal temperature adapt to the actual water temperature in the tank. Then twist the thermostat knob, adjust the temperature to 68°-94°F and then connect to the power supply.
  • Manufacture: UPMCT
  • Product Dimensions: 10.5 x 1.1 x 1.1 inches; 10.5 Ounces
  • Editor's Impressions Of The UPMCT
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

UPMCT Final Thoughts

"No issues."

All seem to vary between 1-2 degrees of each other which doesn't concern me much. The temperature gauge is fairly accurate in my 55 gallon tank. I would definitely recommend this product. The red light means it's off, blue light means the temperature is constant. I got a hold of Amazon, who put me in touch with the seller. Ick for instance detaches from fish at 86 degrees and dies at 89. No biggie, but annoying nonetheless.

Overall Score
4.1


(379 Points)

6. Eheim Jager Aquarium Thermostat Heater

User Ratings: 72 7

Eheim 3619090 First Impressions

"I angled it."

For Discus you need warm and accurate heater and this seems to do the trick. I wouldn't buy any other heater, unless one of these stops working. Maintains it well except when the weather is already warm then it over heats it. I like how the heater is constructed. This is only day one though, so I shall keep an eye one it. The design is sleek and modern looking. Pressing and holding the button for 5 seconds changes it from F to C readouts.

  • Eheim Jager Aquarium Thermostat Heater
  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim 3619090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim 3619090 Final Thoughts

"Long heater."

This is only day one though, so I shall keep an eye one it. We would consider a replacement and then we would return the defective unit. I will definitely be buying another one for my other tanks at bigger one. They shipped us the upgraded version that also heats! And kids love pushing all sorts of buttons. We received the chiller promptly and put it into use. I got a hold of Amazon, who put me in touch with the seller.

Overall Score
4.4


(3152 Points)

7. Uniclife Aquarium Heater Submersible with Thermometer, 300 Watt for 80 Gallon Fish Tank

User Ratings: 69 7

Uniclife First Impressions

"Will buy again."

It is a bonus that the heater is titanium. I had a thermometer on opposite side of tank and the heater was dead on true. I recieved this product without the instructions or the added thermometer. Very easy to install and the adjustable temperature gauge is pretty accurate. Maintains it well except when the weather is already warm then it over heats it. This has been in my fish tank for a few months now and it's been absolutely perfect! Just be careful and keep an eye on your temp settings when you have kids over!

  • Uniclife Aquarium Heater Submersible with Thermometer, 300 Watt for 80 Gallon Fish Tank
  • Ideal for 50-80 gallons 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 turn 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 11.2" x 1" (L x D)
  • Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The color of number will change to blue to indicate the temperature).
  • 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

"This heater works great."

This does a great job at regulating the temp in my 10 gallon. I adjusted the set temperature a little lower to be more in the range I wanted. --The heater itself is a bit shorter if your tank is a short one. No biggie, but annoying nonetheless. The setting always stayed the same. This is a great heater that is very easy to set up and program. There is no protection from it banging on the glass tank.

Overall Score
4.4


(138 Points)

8. 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)

9. Inkbird Heating Thermostat Aquarium Reptile Submersible Probe Sensor ITC306T Relay Digital Greenhous...

User Ratings: 80 1

Inkbird First Impressions

"Great concept."

I dont know, and havent tried just yet. The line is there due to regulations in certain countries. We would consider a replacement and then we would return the defective unit. I'm in the process of setting up for tanks. Beware, but we are hoping for a good outcome! I will be ordering more of these in the future. So far I like it setup was super easy.

  • Inkbird Heating Thermostat Aquarium Reptile Submersible Probe Sensor ITC306T Relay Digital Greenhouse Temperature Controller Dual Stage Timer Switch Only Heat Plug Outlet No Cooling
  • ONLY heating outlet aquarium sensor heater for aquarium, reptile.
  • It can be set to two different temperatures with its function of dual time cycle setting during 24 hours according to the day and night, which can more suitable for the needs of aquarium.
  • This plug and play product is designed with dual LCD display, and offers the optional display of Centigrade or Fahrenheit, which makes it more humanized temperature control.
  • The temperature can be controlled more accurately with its function of temperature calibration and temperature hysteresis.
  • ℃ / ℉ Display can be chosen. Temperature calibration; Over-temperature and sensor fault alarm. Dual display window, be able to display measured temperature and set temperature at the same time.
  • ITC-306T is a pre-wired heating output temperature controller with time function specifically for breeding and planting.
  • It can be set to two different temperatures with its function of dual time cycle setting during 24 hours according to the day and night, which can more suitable for the physiological needs of animals and plants.
  • It can be widely use in over-heat protection and automatic temperature control system of all sorts of electrical equipment for aquarium, pets breeding, hatching, fungus fermenting, and seed germination accelerating, etc.
  • Manufacture: Lerway Tech
  • Editor's Impressions Of The Inkbird
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"Just perfect for my 1."

I'm in the process of setting up for tanks. This little heater is perfect; this is our third purchase of the same heater. This heater warmed it right up and now my Betta and guppies are more active. I like to keep it at 72 and from my thermometer it is reading at exactly 72. Product was received fast, works excellent! Those turned out to be a hit and miss. It would stick out of my 30 g wide tank if I were to put it vertical.

Overall Score
4.7


(195 Points)

10. Aqua Euro USA Apex Chiller Horsepower: 1/10 HP

Aqua Euro USA AC10A First Impressions

"I do recommend."

And kids love pushing all sorts of buttons. If the blue light is flashing it means the heater is not fully submersible. Come on Fluval, expect better from you. It is safe and dependable and comes with a one year warranty. Also I like how it shows both the current temperature and the set temperature. I will definitely be buying another one for my other tanks at bigger one. This this is amazing and is worth the money.

  • Aqua Euro USA Apex Chiller Horsepower: 1/10 HP
  • Titanium heat exchanger features a high BTU rating for superior heat removal
  • Aquarium water chiller designed with quiet operation-rubber mounts to reduce vibration
  • Powerful compressor uses Freon-free and ozone-friendly R134a refrigerant
  • 1/10th Horsepower Rating
  • Manufacture: Aqua Euro USA
  • Item Weight: 29 pounds
  • Product Dimensions: 15.7 x 8.6 x 16.4 inches
  • Editor's Impressions Of The Aqua Euro USA AC10A
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqua Euro USA AC10A Final Thoughts

"Not very reasonable."

I like the fact that it comes with a digital thermometer. 210 gallon ones and one 90 gallon bow front tank. 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. The temperature lights up so it's very easy to read. Maintains it well except when the weather is already warm then it over heats it. The bonus digital thermometer it came with has been super helpful, and is accurate.

Overall Score
3.7


(2 Points)

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