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. ViaAqua 300-Watt Quartz Glass Submersible Heater with Built-In Thermostat

User Ratings: 73 5

ViaAqua VA 300Q First Impressions

"Highly recommended."

The temperature lights up so it's very easy to read. The heater is super thin and the reflective surface is interesting. Was very impressed with the quality of this heater. The line is there due to regulations in certain countries. They shipped us the upgraded version that also heats! I use this little heater for my 10 gallon quarantine tank. I used to try those other cheap heaters sold on amazon.

  • ViaAqua 300-Watt Quartz Glass Submersible Heater with Built-In Thermostat
  • High quality quartz glass
  • Fully-submerisble
  • Visible temperature setting
  • For use in fresh or saltwater aquariums
  • Manufacture: Commodity Axis
  • Product Dimensions: 1.13 x 1.13 x 14.8 inches; 10.88 Ounces
  • Editor's Impressions Of The ViaAqua VA 300Q
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

ViaAqua VA 300Q Final Thoughts

"Great concept."

It took about an hour to reach 80f, which is fairly quick. Those turned out to be a hit and miss. If the blue light is flashing it means the heater is not fully submersible. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. I have only had minor problems with the suction cups. I have a 10gallon tank that was at 72 degrees. I think it works well to not stand out like other heaters.

Overall Score
4.5


(1104 Points)

3. hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W 800W Submersible ...

User Ratings: 75 8

hygger First Impressions

"Great concept."

The temperature lights up so it's very easy to read. Keeps the temperature within 1 degree of what you set it to at all times. I'm in the process of setting up for tanks. Was very impressed with the quality of this heater. I have a 10gallon tank that was at 72 degrees. I will be ordering more of these in the future. It took me a few days slowly turning the dial up to finally get it where I wanted.

  • hygger Fast Heating Titanium Aquarium Heater with LED Digital Temp Controller 500W 800W Submersible Fish Heater for 60-180 Gallon Freshwater Marine Tank
  • This fully submersible aquarium heater enables memory function and over heat protection. Auto shut off when over-heats, resets when it cools down.
  • Made with premium titanium and double sealed by black protective guard, this fish tank heater is resistant to explosion and corrosion, and protect fish and other livestocks from punching and scalding
  • Build-in external IC temp controller, easy to read blue LED digital number shows real time water temperature. Temp accuracy is +/- 1°F.
  • Easy to set temperature without getting hands wet. Build in hand button, Keep pushing the button. It will cycle through all the set temperatures. Temperature can be precisely adjusted from 70 to 94°F
  • 800W aquarium heater, voltage 110-120V, suitable for tank capactiy 120-180 gallon freshwater and marine water aquariums
  • Do not bury under gravel
  • Always keep heater rod fully submerged
  • IP68 100% Waterproof, Fully Submersible
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

hygger Final Thoughts

"This heater is excellent."

I was worried about the quality but I am thoroughly impressed with this heater! This is a powerful heater that holds temperature very well. This is a powerful heater that holds temperature very well. Also were nice along the whole process. There is no protection from it banging on the glass tank. There is no protection from it banging on the glass tank. We received the chiller promptly and put it into use.

Overall Score
4.4


(400 Points)

4. 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)

5. BOEESPAT Aquarium Heater 300W,Fish Tank Heater with Anti Scald Protector and Adjustable Thermostat S...

User Ratings: 51 24

BOEESPAT First Impressions

"FIVE STARS!"

I have it set to 81F to get a 77F water temp. The temperature gauge is fairly accurate in my 55 gallon tank. I contacted the manufacturer and they sent me a new unit in less than a week! If the blue light is flashing it means the heater is not fully submersible. There is a misconception on the internet that the heater isn't fully submersible. I'm not a big fan of the big glass tubes. The temperature gauge is fairly accurate in my 55 gallon tank.

  • BOEESPAT Aquarium Heater 300W,Fish Tank Heater with Anti Scald Protector and Adjustable Thermostat Suitable for Saltwater and Freshwater,One Extra Free Thermometer(40 to 60 gallons)
  • 300W aquarium heater is suitable for 40 to 60 gallons can be used in fresh water and salt water aquariums,easy to hide in the tank
  • Adjustable aquarium heater from 68°F to 93°F. A good temperature range for most fishes is 76°F to 80°F . An additional stick-on thermometer as a bonus to detect water temp at any time
  • Fish Tank Heater Explosion Proof,2mm thickened quartz glass Length - 14.5 inch,voltage 110-120V, power cord is 37.4ft
  • Made of high quality quartz glass, Waterproof double seal material , black protective container, shatter-resistant construction, ensures safe operation and keep your fishes from scalding and punching Heater
  • After set the temp you want, automatic switch device and temperature detection system, water heater will turn off automatically when its temp reaches your pre-set, also will turn on when lower than your set, relieved and simple operation
  • Manufacture: BOEESPAT
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The BOEESPAT
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

BOEESPAT Final Thoughts

"Best value."

If the water runs low or air gets in the heater shuts off. Am a totally sold customer and would recommend them to anybody! 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. At this time I highly recommend this product. I have a 10gallon tank that was at 72 degrees. The temperature difference was very minor.

Overall Score
3.6


(100 Points)

6. 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)

7. NICREW Submersible Mini Aquarium Heater, Aquatic Turtle Heater with Intelligent LED Temperature Disp...

User Ratings: 62 12

NICREW N12611 First Impressions

"They contacted me."

You program it for temperature you want your tank to be. We received the chiller promptly and put it into use. I hope these suction cups work very well. I used to try those other cheap heaters sold on amazon. Seems to keep the temp n the tank fairly regular. The red light means it's off, blue light means the temperature is constant. The cover over the heating tubes is great, the turtles claws can't damage the tube.

  • NICREW Submersible Mini Aquarium Heater, Aquatic Turtle Heater with Intelligent LED Temperature Display
  • Precise temperature adjustment from 68℉ to 94℉
  • Convenient and secure design will automatically shut off if heater is no longer properly submerged, preventing damage
  • LED temperature display allows easy visual confirmation of heater operation
  • External controller allows easy and safe temperature adjustment outside
  • Fully submersible heaters for aquariums up to 5G
  • Manufacture: NICREW
  • Editor's Impressions Of The NICREW N12611
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

NICREW N12611 Final Thoughts

"1 difference."

This product came in the nick of time! Those turned out to be a hit and miss. I have a 10gallon tank that was at 72 degrees. Come on Fluval, expect better from you. Well worth the money the first one I bought still works great. It is safe and dependable and comes with a one year warranty. For Discus you need warm and accurate heater and this seems to do the trick.

Overall Score
4.0


(404 Points)

8. Uniclife Aquarium Heater Submersible with Thermometer, 100 Watt for 20 Gallon Fish Tank

User Ratings: 67 5

Uniclife First Impressions

"Just bought a second one!"

I went ahead and went with the the larger 300W for my 45 gallon. I noticed my old hygger heater beginning to fail and my wife ordered this one. I use a 50 for a 5 gal and a 10 gal tank. I think it works well to not stand out like other heaters. Checked the accuracy of the heater with an infrared thermometer. Sometimes you may have to tinker around with the dial. I used to try those other cheap heaters sold on amazon.

  • Uniclife Aquarium Heater Submersible with Thermometer, 100 Watt for 20 Gallon Fish Tank
  • Ideal for 10-25 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 9.7" 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

"I like this heater."

The red light means it's off, blue light means the temperature is constant. I have only had minor problems with the suction cups. It comes with a hanging kit and can be secured on the edge of the tank. The heater is being used in a 40 gallon breeder. No biggie, but annoying nonetheless. Once attached to the tank wall I've had no issues with it coming off. The heater is super thin and the reflective surface is interesting.

Overall Score
4.3


(25 Points)

9. Hamilton Technology Aqua Euro Max Aquarium Chiller

User Ratings: 76 6

Hamilton Technology AC25H First Impressions

"Impressive."

I'm not a big fan of the big glass tubes. Keeps the water consistent and it's easy to adjust! 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. What more could you ask for great job Hygger Duncan. You program it for temperature you want your tank to be. When i installed them, i let them sit in the tanks without power for 6-24 hours.

  • Hamilton Technology Aqua Euro Max Aquarium Chiller
  • Maintain optimum water temperature by lowering the water temperature of your tank
  • Digital led temperature display control accurately maintains desired temperature
  • Anti-Freezing system will not allow the heat exchanger to freeze
  • Manufacture: Hamilton Technology
  • Product Dimensions: 14 x 10 x 14 inches; 30 Pounds
  • Editor's Impressions Of The Hamilton Technology AC25H
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Hamilton Technology AC25H Final Thoughts

"So far so good."

It just cycles through to 93f and starts over. Seems to keep the temp n the tank fairly regular. I like the fact that it comes with a digital thermometer. We would consider a replacement and then we would return the defective unit. I waited a little bit to write the review so it could be accurate. Awesome chiller, perfect for Hydroponics. I like the fact that it comes with a digital thermometer.

Overall Score
4.5


(77 Points)

10. Aqueon Pro Adjustable Heater, 100W

User Ratings: 69 11

Aqueon 100106106 First Impressions

"I have a 5."

You don't have to worry about wide temperature swings with this unit. I have it set to 81F to get a 77F water temp. The heater protector was very heavy plastic and slim lined which is great. Also were nice along the whole process. The temperature has been holding all day, even in a colder room. Well I bought a second one took me only one trying to get the right temperature. I contacted the manufacturer and they sent me a new unit in less than a week!

  • Aqueon Pro Adjustable Heater, 100W
  • Adjustable heat setting 68 to 88°F, Electronic Thermostat accurate to +/- 1°
  • Shatterproof and nearly indestructible
  • Fully submersible; Auto Shut-Off when over-heats, resets when it cools down
  • LED light is always on: red when heating, green when not heating
  • Limited Lifetime warranty
  • Manufacture: Aqueon
  • Item Weight: 9.6 ounces
  • Product Dimensions: 4 x 14 x 2 inches
  • Editor's Impressions Of The Aqueon 100106106
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqueon 100106106 Final Thoughts

"Well written but vague."

We would consider a replacement and then we would return the defective unit. Once attached to the tank wall I've had no issues with it coming off. This this is amazing and is worth the money. Also were nice along the whole process. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. The heater is super thin and the reflective surface is interesting. So if you set it to 78 degrees, the heater will not kick on until it reads 76.

Overall Score
4.2


(793 Points)

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