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. HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Thermom...

User Ratings: 61 10

HITOP HP 608 First Impressions

"Until the next time."

Easy to read the temp and know exactly how warm the water is. I had a thermometer on opposite side of tank and the heater was dead on true. I noticed my old hygger heater beginning to fail and my wife ordered this one. It is a bonus that the heater is titanium. The heater is being used in a 40 gallon breeder. This is only day one though, so I shall keep an eye one it. I tested it by unplugging and replugging it.

  • HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Thermometer
  • Thickened Glass: 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.
  • 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.
  • Quick and easy installation, submersible fish tank heater, vertical or horizontal placement using suction cups. 1 extra powerful suction cups as your backup (total 3).
  • 300W aquarium heater, length 11-inch, power cord 4.9ft, recommended for aquariums 30 to 60 Gallons.
  • Bonus a stick-on thermometer, no need to buy another thermometer, 24-Hour Professional After-sales Service.
  • Manufacture: Haisen
  • Editor's Impressions Of The HITOP HP 608
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

HITOP HP 608 Final Thoughts

"7L Imagitarium tank."

This product came in the nick of time! Bought it as a chiller for the k40 CO2 laser. If the blue light is flashing it means the heater is not fully submersible. If the water runs low or air gets in the heater shuts off. --The cylinder or rod diameter is bigger. 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.

Overall Score
4.2


(87 Points)

4. Inkbird Aquarium Heater with Probe Thermostat Fish Ornamental Shrimp Reef Tanks 24 Hours Double Time...

User Ratings: 75 6

Inkbird First Impressions

"I like this heater."

The temperatures are pretty accurate. The suction cups are large, high quality and seem to stick great. This is only day one though, so I shall keep an eye one it. It would stick out of my 30 g wide tank if I were to put it vertical. I got this heater for my 55 gallon aquarium. 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.

  • Inkbird Aquarium Heater with Probe Thermostat Fish Ornamental Shrimp Reef Tanks 24 Hours Double Time with Day Night Automatic Temperature Controller
  • 【Two Heating Plug】 Temperature control mode: on / off control. Please note that it is just a heating controller with no cooling function. Both plugs can control heating. The probe comes with a suction tray, which can be easily installed on the water tank.
  • 【Applicable scene】Because it has the powerful function of corrosion protection, it is very suitable for fresh water, sea water aquarium, coral cylinder, ornamental shrimp and tropical fish.
  • 【Dual Time Cycle Setting】Different daytime and night temperatures can be set within 24 hours depending on the physical needs of animals and plants.
  • 【LED display screen】Plug-and-play products are designed with a dual liquid crystal display that provides a temperature display of Celsius or Fahrenheit, capable of displaying.
  • 【Different function】Temperature calibration, over-temperature sensor fault alarm(over-temperature and sensor fault alarm). Maximum output load: 1100 W (110 V).
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"Peace out."

I would definitely recommend this product. The temperatures are pretty accurate. If the blue light is flashing it means the heater is not fully submersible. Sometimes it gets outside of it's ability to cool but only within a few degrees. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. I dont know, and havent tried just yet. It does blend well in some setups and may look bulky in others.

Overall Score
4.5


(944 Points)

5. 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)

6. DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

User Ratings: 75 7

DaToo First Impressions

"Very easy and accurate."

I have only had minor problems with the suction cups. I was worried about the quality but I am thoroughly impressed with this heater! You don't have to worry about wide temperature swings with this unit. The design is sleek and modern looking. I got this heater for my 55 gallon aquarium. This heater works, but the dial it isn't very accurate. No biggie, but annoying nonetheless.

  • DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
  • 25W Betta Aquarium Heater -- Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish!
  • Precise And Constant Temperature -- No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78℉, the heater starts to heat and the red light is on. When the temperature reaches 78℉, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish!
  • The Smallest 25W Betta Heater -- For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can't even find it. Very MINI!!
  • Safe And Durable -- Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
  • One Year Warranty & Satisfaction Guarantee -- This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!
  • Manufacture: DaToo
  • Editor's Impressions Of The DaToo
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

DaToo Final Thoughts

"Great product!"

I use a 50 for a 5 gal and a 10 gal tank. It took about an hour to reach 80f, which is fairly quick. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. This does a great job at regulating the temp in my 10 gallon. I wouldn't buy any other heater, unless one of these stops working. It took me a few days slowly turning the dial up to finally get it where I wanted. I recieved this product without the instructions or the added thermometer.

Overall Score
4.4


(185 Points)

7. Teco WiFi Capable TK-1000 Tank Chiller, 1/4 HP w/Built in Heater

Teco First Impressions

"Pricing was good."

The temperature gauge is fairly accurate in my 55 gallon tank. I bought a similar one at the pet store and it barely worked. I use this little heater for my 10 gallon quarantine tank. Easy to read the temp and know exactly how warm the water is. This is a great heater that is very easy to set up and program. Easy to read the temp and know exactly how warm the water is. They promptly fixed the issue without any delays or drama.

  • Teco WiFi Capable TK-1000 Tank Chiller, 1/4 HP w/Built in Heater
  • The Teco WiFi Capable TK-1000 Tank Chiller, 1/4 HP w/ Built in Heater, features an internationally-recognized high-end compressor and titanium coaxial heat exchanger for high performance, low energy consumption and low noise levels. A unique feature of this chiller is the integrated 400 watt heater.
  • This version is designed to work with the TECOnnect WiFi Controller (separate purchase) that works with your smart phone to set and monitor water temperatures. Most importantly, the Controller will sound an alarm when your set temperature is out of range.
  • 9 degree cooling up to 260 gallons. 39 degrees cooling for 55 gallon aquariums. Note: These temperature pull-down ratings are in ideal situations. We highly recommend purchasing a chiller one size larger than the specifications would lead you to believe is necessary.
  • Does not have a pump. The required flow through the chiller is between 132 gph and 211 gph. Includes integrated 400 watt heater. Dimensions: 12.2" x 12.2" x 18.03". 5/8" tube diameter In/Out Water Connection.
  • Works with the TECOnnect, a WiFi Controller (not included). The TECOnnect works with Android 4.1 or higher and iOS 8.2 and higher.
  • Manufacture: Teco
  • Editor's Impressions Of The Teco
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Teco Final Thoughts

"I like this heater."

The heater is super thin and the reflective surface is interesting. Also were nice along the whole process. I used to try those other cheap heaters sold on amazon. The controller is easy to use, very accurate and reliable. The cover over the heating tubes is great, the turtles claws can't damage the tube. Product was received fast, works excellent! I adjusted the set temperature a little lower to be more in the range I wanted.

Overall Score
5.0


(1 Points)

8. 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)

9. 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)

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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