Editor's Choice - Our Favorite Penn-Plax Aquarium Heaters

1. Penn-Plax Aquarium Heater Fully Submersible Within 1 Degree of Accuracy 75 Watt Heats Up to 15 Gallo...

User Ratings: 64 10

Penn-Plax CH850 First Impressions

"Quality was amazing."

I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Or better yet, conceal it to the back corner. I used to try those other cheap heaters sold on amazon. I went ahead and went with the the larger 300W for my 45 gallon. The line is there due to regulations in certain countries. Sometimes it gets outside of it's ability to cool but only within a few degrees. Sometimes it gets outside of it's ability to cool but only within a few degrees.

  • Penn-Plax Aquarium Heater Fully Submersible Within 1 Degree of Accuracy 75 Watt Heats Up to 15 Gallon Tank
  • Aquarium heater sets and maintains the temperature in your tank within 1 degree accuracy.
  • Features both Fahrenheit and Celsius temperature with easy to read gage.
  • Heater is fully submersible and can be placed horizontally or vertically in your tank.
  • Has a preset temperature to 76 degrees Fahrenheit but is also easily programmed.
  • Heater is safe to use on smaller fish tanks and aquariums up to 10 gallons in size.
  • Manufacture: Monster Pets
  • Product Dimensions: 7 x 1.5 x 3 inches; 1 Ounces
  • Editor's Impressions Of The Penn-Plax CH850
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Penn-Plax CH850 Final Thoughts

"I angled it."

My heater is fully submerged underwater and works perfectly fine. They promptly fixed the issue without any delays or drama. But I am single and don't have to worry about this. This is only day one though, so I shall keep an eye one it. Come on Fluval, expect better from you. I was amazed how quickly I got to my temperature I need it 78 degrees. There is no protection from it banging on the glass tank.

Overall Score
4.2


(848 Points)

2. NICREW Mini Submersible Aquarium Heater, Digital Temperature Display Fish Tank Heater with Adjustabl...

User Ratings: 55 17

NICREW First Impressions

"Thank you for reading."

Personally for me the housing doesn't bother me. --The heater itself is a bit shorter if your tank is a short one. Thanks for the great customer service! I got the 200W variant for my 54 gallon corner tank that's housing goldfish. There is a misconception on the internet that the heater isn't fully submersible. I tested it by unplugging and replugging it. Also I like how it shows both the current temperature and the set temperature.

  • NICREW Mini Submersible Aquarium Heater, Digital Temperature Display Fish Tank Heater with Adjustable External Controller, Suitable for Freshwater & Saltwater Tank
  • Equipped with precise temperature probe, making the temperature difference within ±2ºF to provide ideal living environment for your aquariums
  • Safe and easy to use external controller help operate without getting hands wet, allow Celsius and Fahrenheit control from 68℉/20°C to 94℉/34°C
  • Automatically shut off will be activated if heater is no longer properly submerged, preventing damage
  • Ideal for freshwater and saltwater aquariums, aquaculture, glass containers, and hydroponic systems
  • 100 watts heater is designed for 10-25 gallon fish tank
  • Manufacture: NICREW
  • Editor's Impressions Of The NICREW
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

NICREW Final Thoughts

"Works fine."

210 gallon ones and one 90 gallon bow front tank. This heater is NOT fully submersible. This is only day one though, so I shall keep an eye one it. Per my thermometers, they are all staying constant. Once I opened the box i noticed the quality of the construction. This is only day one though, so I shall keep an eye one it. This this is amazing and is worth the money.

Overall Score
4.0


(109 Points)

3. Sheye 500W Aquarium Heater, Fast Heating Submersible Thermostat, Titanium Fish Tank Heater, with LED...

User Ratings: 65

Sheye First Impressions

"Great heater."

It took me only two tries to get it to the correct temperature. The setting always stayed the same. But I am single and don't have to worry about this. It took me only two tries to get it to the correct temperature. They promptly fixed the issue without any delays or drama. Also I like how it shows both the current temperature and the set temperature. The heater protector was very heavy plastic and slim lined which is great.

  • Sheye 500W Aquarium Heater, Fast Heating Submersible Thermostat, Titanium Fish Tank Heater, with LED Digital Display and External Temperature Controller, for Salt/Fresh Water
  • [Safe & Reliable]: Accurate temperature control making the temperature difference within ±1℃/±2ºF; automatically shut-off the power to avoid overheating and damage, keeping your fish healthy.
  • [Rapid Heating]: Aquarium heaters is made of high quality Titanium metal, high heat transfer efficiency and short heating time. 500 watts is ideal for large aquariums of 60-150 gallons.
  • [Easy Installation]: Vertical or horizontal installation and ensure the device is fully submerged underwater.
  • [External Temperature Controller]: The touch-button controller adjusts the temperature without getting your hands wet. It’s easy to control the temp from 68℉/20°C to 94℉/34°C.
  • [Wide Compatibility]: The fish tank aquarium heater applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems.
  • Manufacture: Sheye
  • Editor's Impressions Of The Sheye
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Sheye Final Thoughts

"The FreeSea is amazing."

Very easy to install and the adjustable temperature gauge is pretty accurate. The temperature gauge is fairly accurate in my 55 gallon tank. I like the fact that it comes with a digital thermometer. Thanks for the great customer service! It does blend well in some setups and may look bulky in others. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. So far I like it setup was super easy.

Overall Score
4.7


(9 Points)

4. Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof De...

User Ratings: 69 13

Cobalt Aquatics 31005 First Impressions

"Works as intended."

I love the heater otherwise, but I'm afraid some water has gotten inside the heater. My fish likes to get close to it and he has never been hurt by it. I emailed the email it says to and told them. Bought it as a chiller for the k40 CO2 laser. Very easy to install and the adjustable temperature gauge is pretty accurate. Now, both points are clear on the package instructions. Beware, but we are hoping for a good outcome!

  • Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W
  • Super-flat design. Fully submersible, modern design for energy efficient Aquarium and terrarium heating. Includes reversible holster/bracket, which allows heater to face inward or outward. See the product images to determine the best neo-therm size for your tank.
  • Accurate, one-touch system. Simply set temperature between 66-96°f with one touch and the neo-therm electronic thermostat will maintain Tank temperature within +0.5°F. Led displays both set temp and actual temp, simultaneously.
  • Ultimate safety and reliability. Integrated thermal protection circuitry prevents heater from overheating. If you forget to turn it off, the neo-therm will automatically shut it down.
  • Virtually indestructible. Unlike cheap, glass heaters, the neo-therm is a resin/thermoplastic heater with a shatterproof outer-casing. Made in Poland and includes a 3-year warranty.
  • Manufacturer You can trust. Most manufacturers rate their heaters on the ability to raise an aquarium 2-3°f above ambient temperatures. This is unreliable and misleading, as the average home fluctuates 2-3°f or more throughout the day. Cobalt rates The neo-therm on the ability to raise a tank 11°f above ambient temperatures, so you will never have to worry about overworking the neo-therm or it keeping up!
  • Manufacture: Cobalt International Inc.
  • Product Dimensions: 2.25 x 1.25 x 11 inches; 8 Ounces
  • Editor's Impressions Of The Cobalt Aquatics 31005
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Cobalt Aquatics 31005 Final Thoughts

"Well written but vague."

It comes with a hanging kit and can be secured on the edge of the tank. I have 3 of the Fluval heaters, in various sizes. This little heater is perfect; this is our third purchase of the same heater. I have only had minor problems with the suction cups. It took me a few days slowly turning the dial up to finally get it where I wanted. I use this little heater for my 10 gallon quarantine tank. I dont know, and havent tried just yet.

Overall Score
4.2


(1419 Points)

5. 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)

6. Inkbird Pre-Wired Digital Dual Stage Temperature Controller Outlet Thermostats 110V 1100W With 6.65f...

User Ratings: 64 10

Inkbird First Impressions

"I do recommend."

This heater warmed it right up and now my Betta and guppies are more active. But my guys don't read them and don't listen! I was amazed how quickly I got to my temperature I need it 78 degrees. Personally for me the housing doesn't bother me. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. The temperatures are pretty accurate. I'm in the process of setting up for tanks.

  • Inkbird Pre-Wired Digital Dual Stage Temperature Controller Outlet Thermostats 110V 1100W With 6.65ft DC Cord NTC Stainless Probe Sensor for Aquarium, Incubator ect
  • The sensor can easily be replaced.
  • Maximum output load: 1100W (120V).
  • Supports Centigrade or Fahrenheit unit display.
  • Alarm when over-temperature and sensor error.
  • Dual display window, be able to display measured temperature and set temperature at the same time.
  • Item Weight: 1.06 pounds
  • Editor's Impressions Of The Inkbird
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Inkbird Final Thoughts

"I like this heater."

I am very happy with this purchase. It's pretty noticeable, but I don't really care. I'm not a big fan of the big glass tubes. Thanks for the great customer service! Once I opened the box i noticed the quality of the construction. The temperature gauge is fairly accurate in my 55 gallon tank. This has the best controller that I have found on the market.

Overall Score
4.1


(25 Points)

7. Yescom 400W Submersible Adjustable Thermostat Aquarium Heater Titanium Fish Tank Heater 80 Gallon Sa...

User Ratings: 34

Yescom First Impressions

"Same suckers for years!"

--The heater itself is a bit shorter if your tank is a short one. Easy enough to let it run all the time. I emailed the email it says to and told them. When i installed them, i let them sit in the tanks without power for 6-24 hours. I have 3 of the Fluval heaters, in various sizes. They shipped us the upgraded version that also heats! The suction cups are large, high quality and seem to stick great.

  • Yescom 400W Submersible Adjustable Thermostat Aquarium Heater Titanium Fish Tank Heater 80 Gallon Salt Fresh Water
  • Aquarium Heater: 400w fish tank heater fits 3 1/4 to 3 11/12 ft fish tank and is ideal for fresh water & salty water aquariums, is suitable for 70-80 gallon
  • LCD Digital Display: Easy to observe the water temperature and the external controller is safe to adjust temperature
  • More durable: Made of Titanium Alloy, IPX8 water-proof, explosion-proof, corrosion-proof, scald-preventing
  • Power-off Protection: When sensing probe is exposed in the air or the water temperature is above 94°F, the heater will stop heating to effectively prevent dry burning
  • Buy with confidence: CE, FCC, ROHS certificated for safe protection
  • Manufacture: Yescom
  • Product Dimensions: 12.6 x 1.2 x 1.2 inches; 13.93 Ounces
  • Editor's Impressions Of The Yescom
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Yescom Final Thoughts

"5 or even."

If the blue light is flashing it means the heater is not fully submersible. Well worth the money the first one I bought still works great. I use a 50 for a 5 gal and a 10 gal tank. I dont know, and havent tried just yet. I appreciate the exterior temp readout and control module. I tested it by unplugging and replugging it. I contacted the manufacturer and they sent me a new unit in less than a week!

Overall Score
4.0


(3 Points)

8. Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater with Adjust Knob Thermostat...

User Ratings: 77 3

Orlushy First Impressions

"Highly recommended."

It's only been set up for a month we'll see how well it does in a few months. This does a great job at regulating the temp in my 10 gallon. Seems to keep the temp n the tank fairly regular. But my guys don't read them and don't listen! I'm not a big fan of the big glass tubes. --Temperature adjustment labeling is on top rather than on the rod. Easy enough to let it run all the time.

  • Orlushy Submersible Aquarium Heater,100W/150W/200W/300W Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups and Free Thermometer Suitable for Marine Saltwater and Freshwater
  • ★300W aquarium heater is suitable for 50 to 80 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
  • Manufacture: Nova pet supplies co.LTD
  • Editor's Impressions Of The Orlushy
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Orlushy Final Thoughts

"5 stars in my book!"

I was amazed how quickly I got to my temperature I need it 78 degrees. I am very happy with this purchase. The heater is easy; turn the dial to set temp and plug in. I am very happy with this purchase. My fish likes to get close to it and he has never been hurt by it. At this time I highly recommend this product. Awesome chiller, perfect for Hydroponics.

Overall Score
4.6


(2456 Points)

9. Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 65 Gallon Fish Tank (300W for ...

User Ratings: 59 10

HITOP-Fish First Impressions

"This heater is excellent."

Will update my review if any changes occur. But my guys don't read them and don't listen! The heater is being used in a 40 gallon breeder. Once I opened the box i noticed the quality of the construction. Personally for me the housing doesn't bother me. Ick for instance detaches from fish at 86 degrees and dies at 89. Also I like how it shows both the current temperature and the set temperature.

  • Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 65 Gallon Fish Tank (300W for 25~65gallon)
  • Explosion Proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals.
  • Application:300W water heater is suitable for 20 – 50 gallon tank, also suitable for both saltwater and freshwater.
  • Accurate Temperature: Temperatures from 68°F to 93°F (20°C - 34°C), come with a thermometer sticker, convenient to detect the water temperature without another pay.
  • Long Service Life: Adopt 10-slot multi-branched heating wire ceramic frame, shorter length, 11*1*1 in(27*2.5*2.5 cm), better heat dissipation, and can save more space for your fishes.
  • Complete Accessories and Warranty: Except for thermometer, also equipped with 3 suction cups, one for replacement, and offer 12 months warranty, leave you no worries after you buy it.
  • Manufacture: IBAY
  • Product Dimensions: 11 x 1 x 1 inches; 11.22 Ounces
  • Editor's Impressions Of The HITOP-Fish
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

HITOP-Fish Final Thoughts

"9 degrees."

Would be great to be able to tune that to. But I am single and don't have to worry about this. --The heater itself is a bit shorter if your tank is a short one. I recieved this product without the instructions or the added thermometer. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. Keeps the temperature within 1 degree of what you set it to at all times. I like the fact that it comes with a digital thermometer.

Overall Score
4.1


(109 Points)

10. Marina Betta Fish Submersible Heater for Fish Tank Aquarium, 1.5 gallons, 11182

User Ratings: 64 10

AquaClear 11182 First Impressions

"So far it seems great!"

I went ahead and went with the the larger 300W for my 45 gallon. Keeps the water consistent and it's easy to adjust! There is no protection from it banging on the glass tank. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. I would definitely recommend this product. This is a powerful heater that holds temperature very well. So when I first received it it didn't work and I was very disappointed.

  • Marina Betta Fish Submersible Heater for Fish Tank Aquarium, 1.5 gallons, 11182
  • 8-watt submersible fish tank heater for aquariums up to 1.5 gallons (5 L)
  • Creates ideal conditions for bettas to live in
  • Made of durable polymer, which is tougher than glass
  • Easy to install in your betta fish tank; use the suction cups to place on the side of the betta tank
  • Automatically reaches set temperature; allowing you to easily maintain your fish aquarium
  • Use in combination with the Marina Standing Thermometer (sold separately) for accurate temperature readings
  • Manufacture: Marina
  • Product Dimensions: 1.7 x 5.3 x 7.1 inches; 6.3 Ounces
  • Editor's Impressions Of The AquaClear 11182
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

AquaClear 11182 Final Thoughts

"That wasn't a good sign."

Those turned out to be a hit and miss. The heater protector was very heavy plastic and slim lined which is great. The heater is super thin and the reflective surface is interesting. The temperature lights up so it's very easy to read. You don't have to worry about wide temperature swings with this unit. Temperature is slightly off by running a little warmer. I am very happy with this purchase.

Overall Score
4.2


(2680 Points)

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