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 [star rating='4.4']
• Quality [star rating='4.4']
• Value For Money [star rating='3.8']
• Affordability [star rating='4.3']

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 [star rating='4.8']
• Quality [star rating='4.7']
• Value For Money [star rating='4.5']
• Affordability [star rating='5']

Here Are Some Other Related Aquarium Heaters

3. MONIPA Aquarium Water Chiller w/Submersible Pump 120W 110V Fish Tank Chiller Water Cooler Cooling Ma...

User Ratings: 50 50

MONIPA First Impressions

"7L Imagitarium tank."

Am a totally sold customer and would recommend them to anybody! I wouldn't buy any other heater, unless one of these stops working. I went ahead and went with the the larger 300W for my 45 gallon. I have only had minor problems with the suction cups. They shipped us the upgraded version that also heats! Keeps the temperature within 1 degree of what you set it to at all times. I adjusted the set temperature a little lower to be more in the range I wanted.

• MONIPA Aquarium Water Chiller w/Submersible Pump 120W 110V Fish Tank Chiller Water Cooler Cooling Machine Crystal Shrimp for Fresh Water Salt Water Plant Tank USA Stock
• ★Suitable for fish tank size: power<180W & capacity ≤ 30L. Suitable for water flow: 1-3 L / min
• ★The fish tank water cooler adopts micro computer and semiconductor for cooling, high efficient and low power consumption.
• ★Aluminum-alloy evaporator, anti-corrosion and durable.
• ★ Good heat dissipation design at rear. Used with water pump and hose. Suitable for all kinds of cold water tanks.
• ★This item will ship from USA, delivery time need about 5-8 days. If there is any questions please feel free to contact with us, MONIPA will spare no effort to help you.
• Manufacture: MONIPA

• Editor's Impressions Of The MONIPA
• Heat Quality [star rating='2.3']
• Quality [star rating='2.8']
• Value For Money [star rating='3.8']
• Affordability [star rating='2.2']

4. HITOP 25W 50W 100W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction ...

User Ratings: 70 5

HITOP HP 608 First Impressions

"Bought the 300W one."

Personally for me the housing doesn't bother me. I used to try those other cheap heaters sold on amazon. Sometimes it gets outside of it's ability to cool but only within a few degrees. There is a misconception on the internet that the heater isn't fully submersible. Easy enough to let it run all the time. I noticed my old hygger heater beginning to fail and my wife ordered this one. This heater warmed it right up and now my Betta and guppies are more active.

• HITOP 25W 50W 100W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup
• 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).
• 50W aquarium heater, length 7.8-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 20 Gallons.
• Bonus a stick-on thermometer, no need to buy another thermometer, 24-Hour Professional After-sales Service.
• Manufacture: Haisen
• Product Dimensions: 7.87 x 0.98 x 0.98 inches; 8.78 Ounces

• Editor's Impressions Of The HITOP HP 608
• Heat Quality [star rating='4.6']
• Quality [star rating='4.3']
• Value For Money [star rating='4.7']
• Affordability [star rating='4.8']

5. Hitop 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater, Thermostat for Turtle ...

User Ratings: 68 16

HITOP-Aqua First Impressions

"Looks as advertised."

The design is sleek and modern looking. I like how the heater is constructed. We received the chiller promptly and put it into use. The temperature has been holding all day, even in a colder room. I dont know, and havent tried just yet. It just cycles through to 93f and starts over. I like to keep it at 72 and from my thermometer it is reading at exactly 72.

• Hitop 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater, Thermostat for Turtle Tank …
• [Application]:50W heater normally suitable for 5-15 Gallons small fish tank, made of quartz glass, anti-rust, both for fresh water and marine water.
• [Explosion Proof]: 2mm thickened quartz glass, 33% thicker than normal aquarium heaters, much safer for both human and animals.
• [Adjustable temperature]：With temperature control knob, the adjustable ranges of this fish heater is 61°F - 90°F. Accurate heating, the error does not exceed 2°F.
• [Easy to use]: Simple design, compact size (7.8x 1 x 1 in), with three suction cups and a sticker thermometer, easy to install and clean.
• [WARRANTY]: Offering 12 months warranty for the whole heater.
• Manufacture: Haisen

• Editor's Impressions Of The HITOP-Aqua
• Heat Quality [star rating='3.2']
• Quality [star rating='4.9']
• Value For Money [star rating='4.1']
• Affordability [star rating='5']

6. LONDAFISH Aquarium Chillers Aquarium Fan Fish Tank Cooling Fan Marine 2 Fan

User Ratings: 60 11

LONDAFISH First Impressions

"The accuracy is perfect."

And kids love pushing all sorts of buttons. This product came in the nick of time! I use a 50 for a 5 gal and a 10 gal tank. Easy enough to let it run all the time. I got a hold of Amazon, who put me in touch with the seller. Was very impressed with the quality of this heater. It is safe and dependable and comes with a one year warranty.

• LONDAFISH Aquarium Chillers Aquarium Fan Fish Tank Cooling Fan Marine 2 Fan
• Two-speed wind control,according to the indoor temperature,reduce water temperature and drop up to 2 ~ 3℃
• Adjustable jaws can clamp the the cylinder wall that the thickness within 1.2cm，meet the daily use of fish tanks
• Great cooling fans 12V safe voltage,with high security standards and ensure the safety of the fan
• Angle adjustable:Adjustable width of fan and bracket up to 100°,practical and easy to install and move
• Safety Packing With Wonderful After Sale Service: The powerful jet lighter is packaged in an attractive gift box which is a great gift for yourself, friends and families. We provide with 90 days return and refund service and all the emails will be replied within 24 hour. We provide lifetime technique support, if you have any question, please feel free to contact us.
• Great cooling fans provide powerful ventilation to reduce heat transference from aquarium equipment. Extremely quiet operation with adjustable positioning, perfect for saltwater aquarium(reef and frag tank) and fresh water aquarium.
• No assembly required, easy and convenient for use. Easy installation(clamp mounting bracket).
• Low power consumption, adjustable 2 level of wind force.
• Manufacture: LONDAFISH

• Editor's Impressions Of The LONDAFISH
• Heat Quality [star rating='5']
• Quality [star rating='4.8']
• Value For Money [star rating='3.1']
• Affordability [star rating='4.2']

7. n a Aquarium Heater,25W 50W Aquarium Fish Tank Submersible Heater,Anti-Scald Fish, with Water Shorta...

User Ratings: 60 8

N / A First Impressions

"I setup a 5."

Those turned out to be a hit and miss. I went ahead and went with the the larger 300W for my 45 gallon. Seems to keep the temp n the tank fairly regular. Product was received fast, works excellent! Ick for instance detaches from fish at 86 degrees and dies at 89. The heater is easy; turn the dial to set temp and plug in. I had a thermometer on opposite side of tank and the heater was dead on true.

• n a Aquarium Heater,25W 50W Aquarium Fish Tank Submersible Heater,Anti-Scald Fish, with Water Shortage Protection and Aquarium Thermometer, for 3 to 25 Gallon Fish Tank Water Tank
• [Automatic temperature control chip]: Aquarium Heater can automatically adjust the temperature between 77 ° F and 82 ° F (25 ° C to 28 ° C). It is different from the traditional manual adjustment of other aquarium heaters, without setting. It will automatically turn on / off to reach the set temperature continuously and steadily.
• [Gift temperature sticker]: Paste the temperature sticker to the surface of the water tank, and you can use it to monitor the temperature.
• [Stable and high-grade materials]: strong industrial plastics, non-toxic and durable. It has explosion-proof, anti-expansion functions, high temperature resistance and safety. Suitable for betta fish, such as turtles and lace. Length-13.97 cm, width-2.29 cm, thickness-1.68 cm.
• [What capacity is suitable]: 25W fish tank heater is suitable for 9.83 liters to 1.83 liters, and can be used for mini fish tanks and aquariums. This aquarium heater is equipped with a suction cup, which can be easily absorbed in the aquarium. Easy to hide in the water tank.
• [Warranty and quality assurance]: We provide 24-hour guidance service, you can contact us at any time, and one year of quality problems return service. This product aquarium heater has passed CE, ROHS, FCC certification. Explosion-proof, waterproof, anti-expansion, high temperature and other safe operations.
• Manufacture: n a
• Product Dimensions: 5.3 x 1 x 0.7 inches; 6.14 Ounces

• Editor's Impressions Of The N / A
• Heat Quality [star rating='3.7']
• Quality [star rating='3.8']
• Value For Money [star rating='3.1']
• Affordability [star rating='4.5']

8. Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W P...

User Ratings: 71 9

Inkbird 8541956716 First Impressions

"16-26 gallons 75 watt 10."

Keeps the temperature within 1 degree of what you set it to at all times. It's pretty noticeable, but I don't really care. I bought a similar one at the pet store and it barely worked. This is a great heater that is very easy to set up and program. And kids love pushing all sorts of buttons. 210 gallon ones and one 90 gallon bow front tank. Checked the accuracy of the heater with an infrared thermometer.

• Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W Pre Wired Dual Stage Digital Outlet Probe Heating Cooling Plug Homebrewing Refrigerator Greenhouse
• Pre-wired controller ITC-308 is served as the successor to the STC-1000. If you don't want to build your own STC-1000, the Inkbird ITC-308 is the solution!
• Setup is easy, straightforward and quick.
• The cord on the remote temperature sensor is a bit over 6 feet long.
• Accurate displays, thermostatic function and temperature calibration.
• It's an all in one, simple solution providing control of cooling and heating.
• Item Weight: 14.4 ounces

• Editor's Impressions Of The Inkbird 8541956716
• Heat Quality [star rating='3.5']
• Quality [star rating='5']
• Value For Money [star rating='4.3']
• Affordability [star rating='4.6']

9. 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 [star rating='5']
• Quality [star rating='4.3']
• Value For Money [star rating='4.8']
• Affordability [star rating='4.4']

10. hygger 500W 800W Aquarium Heater, Submersible Fish Tank Water Heater with External Color LED Digital...

User Ratings: 74 10

hygger First Impressions

"Excellent build quality."

Come on Fluval, expect better from you. I have only had minor problems with the suction cups. The bonus digital thermometer it came with has been super helpful, and is accurate. This is a great heater that is very easy to set up and program. All seem to vary between 1-2 degrees of each other which doesn't concern me much. But my guys don't read them and don't listen! Two inches above that is a waterline for maximum.

• hygger 500W 800W Aquarium Heater, Submersible Fish Tank Water Heater with External Color LED Digital Temperature Controller, Fast Heating for 60~180 Gallon for Saltwater and Freshwater
• LED DIGITAL DISPLAY CONTROLLER: ① Displays real-time water temperature or set temperature, three-digit display, water temperature display accurate to 0.1 °F, easy to read. ② 4 kinds of work instructions - Working/Malfunction/ Thermostatic/ Out of water, easy to understand. ③ Child Lock"KEY": need to touch 3 seconds to set the temperature.
• RAPID HEATING: Fastest 5 seconds warming, with intelligent circuit board, the outside is wrapped with aluminum material to accelerate heat conduction and protection. Automatically reduces power when approaching the set temperature, fully utilizes thermal energy inertia to smoothly reach the set temperature, saving energy.
• INTELLIGENT THERMOSTAT: Over-temperature protection prevents "cooking fish". When the water temp exceeds about 93.5 °F, start alternately flashing EE fault code; and over 97℉, the heater will stop heating automatically. When the water temp cool down to 93℉, the heater will start working automatically. In addition, it has a power-off memory function and no need to set it again.
• ANTI-DRY PROTECTION: When the heating rod is exposed to air, display ER fault code and the heater will shut off automatically. When the heating rod is completely immersed in water, it will start working automatically. Effectively extend the service life.
• HIGH-QUALITY MATERIALS: Built-in dual temperature probe, real-time monitoring of water temperature, temperature accuracy of ± 1 °F; high temperature resistant ABS material, no deformation and no softening, explosion-proof and anti-corrosion, no leakage of electricity. Strong suction cup bracket, can stably fix the heater in every corner of the fish tank.
• Manufacture: hygger

• Editor's Impressions Of The hygger
• Heat Quality [star rating='3.8']
• Quality [star rating='3.5']
• Value For Money [star rating='5']
• Affordability [star rating='4.2']