Editor's Choice - Our Favorite Marina Aquarium Heaters

1. Fluval Marina Submersible Heater for Aquarium, Mini

User Ratings: 59 9

Marina 11230 First Impressions

"Best value."

We wish the controls were available in Farenheit also to make things a little easier. It would stick out of my 30 g wide tank if I were to put it vertical. There is a misconception on the internet that the heater isn't fully submersible. No biggie, but annoying nonetheless. I would definitely recommend this product. Sometimes it gets outside of it's ability to cool but only within a few degrees. It's pretty noticeable, but I don't really care.

  • Fluval Marina Submersible Heater for Aquarium, Mini
  • 25-Watt submersible heater for freshwater or saltwater aquariums
  • Easy to read temperature settings
  • Impact-resistant glass design; waterproof sealing
  • Includes bracket with suction cups for easy, secure installation
  • Bumper guard to protect fish
  • Length: 15 cm (6”)
  • Impact-resistant glass design
  • Water proof sealing
  • Manufacture: Marina
  • Product Dimensions: 1.3 x 5 x 10.5 inches; 6.4 Ounces
  • Editor's Impressions Of The Marina 11230
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Marina 11230 Final Thoughts

"Amazing customer service."

The red light means it's off, blue light means the temperature is constant. We wish the controls were available in Farenheit also to make things a little easier. The temperature gauge is fairly accurate in my 55 gallon tank. I am very happy with this purchase. We wish the controls were available in Farenheit also to make things a little easier. --The cylinder or rod diameter is bigger. This is a great heater that is very easy to set up and program.

Overall Score
4.1


(956 Points)

Peoples Choice - Other Highly Rated Marina Aquarium Heaters

2. Fluval Marina Submersible Heater for Aquarium

User Ratings: 68 7

Marina 11233 First Impressions

"The accuracy is perfect."

This product came in the nick of time! I got this heater for my 55 gallon aquarium. They promptly fixed the issue without any delays or drama. When i installed them, i let them sit in the tanks without power for 6-24 hours. I adjusted the set temperature a little lower to be more in the range I wanted. Those turned out to be a hit and miss. I think it works well to not stand out like other heaters.

  • Fluval Marina Submersible Heater for Aquarium
  • Submersible heater for fresh or saltwater aquariums or reservoirs
  • Easy to read temperature settings
  • Impact-resistant glass design; Water proof sealing
  • Includes bracket with suction cups for easy, secure installation
  • Length: 8.5 Inch
  • Manufacture: Marina
  • Product Dimensions: 1.5 x 1.5 x 8.5 inches; 9.6 Ounces
  • Editor's Impressions Of The Marina 11233
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Marina 11233 Final Thoughts

"I like it."

The temperatures are pretty accurate. Product was received fast, works excellent! The temperature lights up so it's very easy to read. The temperature gauge is fairly accurate in my 55 gallon tank. The bonus digital thermometer it came with has been super helpful, and is accurate. The temperature gauge is fairly accurate in my 55 gallon tank. The temperature gauge is fairly accurate in my 55 gallon tank.

Overall Score
4.3


(658 Points)

3. 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)

4. BTkviseQat Aquarium Heater, Thermocontrol Regulator Heater, Fits Aquarium Fish Tanks (EU Plug), 50 W...

User Ratings: 60 8

BTkviseQat First Impressions

"I would buy again."

The heater protector was very heavy plastic and slim lined which is great. Per my thermometers, they are all staying constant. If the water runs low or air gets in the heater shuts off. This heater works, but the dial it isn't very accurate. My fish likes to get close to it and he has never been hurt by it. They shipped us the upgraded version that also heats! It does blend well in some setups and may look bulky in others.

  • BTkviseQat Aquarium Heater, Thermocontrol Regulator Heater, Fits Aquarium Fish Tanks (EU Plug), 50 W Underwater Aquarium Heater with Thermometer and Suction Cup
  • Manufacture: BTkvise
  • Editor's Impressions Of The BTkviseQat
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

BTkviseQat Final Thoughts

"It easy to set."

So far I like it setup was super easy. I hope these suction cups work very well. Sometimes it gets outside of it's ability to cool but only within a few degrees. The heater protector was very heavy plastic and slim lined which is great. You don't have to worry about wide temperature swings with this unit. It took about an hour to reach 80f, which is fairly quick. Also I like how it shows both the current temperature and the set temperature.

Overall Score
4.1


(123 Points)

5. 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)

6. Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED T...

User Ratings: 67 6

Zacro First Impressions

"That was cool."

I confirm it with my cooking digital probe thermometer. The suction cups are large, high quality and seem to stick great. I went ahead and went with the the larger 300W for my 45 gallon. We received the chiller promptly and put it into use. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. I use this little heater for my 10 gallon quarantine tank. I will definitely be buying another one for my other tanks at bigger one.

  • Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank
  • INTELLIGENT TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within ±2ºF. Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. Provide the best living environment for your aquatic creatures.
  • DIGITAL DISPLAY&REMOTE CONTROLLER: Digital LED display shows real time water temperature. Heating temperature range from 68 to 91°F. The remote-button controller adjusts the temperature without getting your hands wet.
  • AUTOMATIC OVERHEATING PROTECTION: Once set the desired temperature, this fully submersible heater lights on red indicates that it is heating. It will auto shut off once it reach set temperature. If the heating rod temperature reaches 96.8°F (36°C), the heating rod will stop heating. The thermometer can observe the water temperature at any time.
  • SHUT OFF WHEN OUT OF WATER: Please note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying Er. The product uses explosion-proof quartz tube and is equipped with a plastic anti-collision sheath to prevent your aquatic organisms from being injured by touching the heating rod.
  • Our heating rods can be used continuously for up to 10,000 hours and can display the use time. Let you replace the heating rod in time to ensure the continuous water temperature.
  • Keep the heater fully submerged in water.
  • Don’t bury the heater under substrates such as gravels or sands.
  • Keep the remote temp controller away form water.
  • Manufacture: Zacro
  • Editor's Impressions Of The Zacro
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Zacro Final Thoughts

"5 gallon tank."

And I get to keep the first one I bought! Pressing and holding the button for 5 seconds changes it from F to C readouts. Awesome chiller, perfect for Hydroponics. I like to keep it at 72 and from my thermometer it is reading at exactly 72. I will definitely be buying another one for my other tanks at bigger one. I am very happy with this purchase. No biggie, but annoying nonetheless.

Overall Score
4.4


(22 Points)

7. Aqueon Submersible Heater

User Ratings: 67 11

Aqueon 100106102 First Impressions

"What a long."

Easy enough to let it run all the time. Also I like how it shows both the current temperature and the set temperature. Once I opened the box i noticed the quality of the construction. The controller is easy to use, very accurate and reliable. They promptly fixed the issue without any delays or drama. I will definitely be buying another one for my other tanks at bigger one. Those turned out to be a hit and miss.

  • Aqueon Submersible Heater
  • Precise temperature setting to 1-degree F (68-88 degrees F)
  • Recommended for aquariums up to 100-Gallons
  • Shatter-resistant construction, fully submersible
  • LED light turns on when aquarium water is being heated; Automatic safety shut off and overheat protection
  • Lifetime Limited Warranty
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 3.7 x 15 x 1.5 inches; 8.96 Ounces
  • Editor's Impressions Of The Aqueon 100106102
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqueon 100106102 Final Thoughts

"Will update in a month."

So if you set it to 78 degrees, the heater will not kick on until it reads 76. It would stick out of my 30 g wide tank if I were to put it vertical. This is a great heater that is very easy to set up and program. I am very happy with this purchase. This is only day one though, so I shall keep an eye one it. Easy to read the temp and know exactly how warm the water is. I like to keep it at 72 and from my thermometer it is reading at exactly 72.

Overall Score
4.2


(1157 Points)

8. JZMYXA Aquarium Heater Clip Holder Aquarium Tube Clip Suction Cup Clip, 4 Pieces

User Ratings: 60 15

JZMYXA First Impressions

"My fish is very content."

I was amazed how quickly I got to my temperature I need it 78 degrees. I confirm it with my cooking digital probe thermometer. The temperature lights up so it's very easy to read. This has the best controller that I have found on the market. The temperature lights up so it's very easy to read. When i installed them, i let them sit in the tanks without power for 6-24 hours. I think it works well to not stand out like other heaters.

  • JZMYXA Aquarium Heater Clip Holder Aquarium Tube Clip Suction Cup Clip, 4 Pieces
  • 4 pieces. Leaf shape tube clamp.
  • Clip inner diam:0.69 inch(17.6mm).
  • Fit for pipe Outer diam between 0.7-1 inch(18-24 mm).
  • Fit for aquarium heater diam between 0.7-1 inch(18-24 mm).
  • High quality and durable.
  • Manufacture: JZMYXA
  • Product Dimensions: 1.14 x 1.57 x 0.39 inches; 0.81 Ounces
  • Editor's Impressions Of The JZMYXA
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

JZMYXA Final Thoughts

"Very pleased so far."

Keeps the water consistent and it's easy to adjust! We wish the controls were available in Farenheit also to make things a little easier. We would consider a replacement and then we would return the defective unit. If the blue light is flashing it means the heater is not fully submersible. I would definitely recommend this product. Per my thermometers, they are all staying constant. I'm in the process of setting up for tanks.

Overall Score
4.0


(74 Points)

9. Uniclife Preset Aquarium Heater Submersible 50W/250 W with Electronic Thermostat Fish Tank Heater fo...

User Ratings: 66 12

Uniclife First Impressions

"I do recommend."

It does blend well in some setups and may look bulky in others. I confirm it with my cooking digital probe thermometer. I would definitely recommend this product. I will definitely be buying another one for my other tanks at bigger one. I hope these suction cups work very well. The temperatures are pretty accurate. If the water runs low or air gets in the heater shuts off.

  • Uniclife Preset Aquarium Heater Submersible 50W/250 W with Electronic Thermostat Fish Tank Heater for 10/80 Gallon
  • 5~15 gallons fish tanks were recommended. Applicable for freshwater, marine and tropical aquariums.
  • Preset temperature of 78°F: Built-in electronic thermostat, Model PH50 would automatic heating water then maintain the temperature at 78±2° which is an ideal temperature for most of tropical fish. No adjustment needed, so not adjustable, please kindly note before order.
  • Shut-off Automatically: LED indicator light would display red while it’s turned on and heating, will automatic turn off when the preset temperature( 78±2°) was reached.
  • Anti-Shatter:Made of heat-resist thick quartz glass, shatterproof material to keep your fishes safe. UL listed, prevent the risk of fire, electric shock.
  • Small Sized and Submersible: Fully submerge the heater, tightly fix it with 2 strong suction cups vertically or horizontally on the tank. Small size makes it easy to hide and save space.
  • To keep the water at the right temperature of 78 degree F consistently for the most popular tropical fish species.
  • The temperature won’t change suddenly or frequently would make your fish happy and healthy.
  • Made of a shatter-resistant tempered quartz glass, which helps to keep your fish and other aquarium dwellers safe.
  • Manufacture: Uniclife
  • Editor's Impressions Of The Uniclife
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Uniclife Final Thoughts

"My fish is very content."

Come on Fluval, expect better from you. The line is there due to regulations in certain countries. I noticed my old hygger heater beginning to fail and my wife ordered this one. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. Two inches above that is a waterline for maximum. Temperature is slightly off by running a little warmer. The setting always stayed the same.

Overall Score
4.2


(188 Points)

10. Aqua Euro USA Apex 1/2 HP Aquarium Chiller, 1030 GAL

Aqua Euro USA First Impressions

"Heats the water quickly."

There is no protection from it banging on the glass tank. Ick for instance detaches from fish at 86 degrees and dies at 89. My heater is fully submerged underwater and works perfectly fine. I have a 10gallon tank that was at 72 degrees. It is safe and dependable and comes with a one year warranty. Personally for me the housing doesn't bother me. I use a 50 for a 5 gal and a 10 gal tank.

  • Aqua Euro USA Apex 1/2 HP Aquarium Chiller, 1030 GAL
  • Designed with quiet operation-rubber mounts to reduce vibration
  • Powerful compressor uses Freon-free and ozone-friendly R134a refrigerant
  • 1/2 Horsepower Rating
  • Manufacture: Aqua Euro USA
  • Item Weight: 50 pounds
  • Product Dimensions: 18 x 12.6 x 22 inches
  • Editor's Impressions Of The Aqua Euro USA
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqua Euro USA Final Thoughts

"Long heater."

I got the 200W variant for my 54 gallon corner tank that's housing goldfish. It took me only two tries to get it to the correct temperature. I use this little heater for my 10 gallon quarantine tank. It took about an hour to reach 80f, which is fairly quick. Takes a little while to drop the temps if it is hot in the garage. If the water runs low or air gets in the heater shuts off. The setting always stayed the same.

Overall Score
5.0


(1 Points)

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