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 [star rating='3.3']
  • Quality [star rating='3.6']
  • Value For Money [star rating='3.8']
  • Affordability [star rating='4.2']

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

[star rating="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 [star rating='4']
  • Quality [star rating='3.8']
  • Value For Money [star rating='3.6']
  • Affordability [star rating='3.9']

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

[star rating="4.5"]
(1104 Points)

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

User Ratings: 75 4

HITOP-Fish First Impressions

"5 degrees."

It took me only two tries to get it to the correct temperature. I will definitely be buying another one for my other tanks at bigger one. It's pretty noticeable, but I don't really care. And I get to keep the first one I bought! They promptly fixed the issue without any delays or drama. Also I like how it shows both the current temperature and the set temperature. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees.

  • Hitop 50W 100W 300W Submersible Adjustable Aquarium Heater, for 5 – 50 Gallon Fish Tank
  • Explosion Proof: 2mm thickened explosion proof glass, 33% thicker than the normal, safer for both human and animals.
  • Application: 50W water heater is suitable for 5 – 20 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 8-slot multi-branched heating wire ceramic frame, shorter length, 7.8*1*1 in(20*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: 7.8 x 1 x 1 inches; 8.78 Ounces
  • Editor's Impressions Of The HITOP-Fish
  • Heat Quality [star rating='4.4']
  • Quality [star rating='5']
  • Value For Money [star rating='4.5']
  • Affordability [star rating='3.8']

HITOP-Fish Final Thoughts

"The FreeSea is amazing."

Keeps the water consistent and it's easy to adjust! But my guys don't read them and don't listen! 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. I got this heater for my 55 gallon aquarium. This heater warmed it right up and now my Betta and guppies are more active. At this time I highly recommend this product.

Overall Score
4.5

[star rating="4.5"]
(249 Points)

4. ZEROYOYO Fish Tank Fan Aquarium Cooling Fan USB Charge Hang On Chiller for Water Plants Mini Fish Ta...

User Ratings: 23 42

ZEROYOYO First Impressions

"Well written but vague."

Once attached to the tank wall I've had no issues with it coming off. And I get to keep the first one I bought! They promptly fixed the issue without any delays or drama. Those turned out to be a hit and miss. My marina heater takes a few hours. I was worried about the quality but I am thoroughly impressed with this heater! I'm not a big fan of the big glass tubes.

  • ZEROYOYO Fish Tank Fan Aquarium Cooling Fan USB Charge Hang On Chiller for Water Plants Mini Fish Tank
  • material: plastic,Colour: Black
  • in Aquarium Heaters & Chillers
  • Waterproof design, good quality,Made of new high quality materials for long life
  • Provide a more suitable temperature for the fish tank to make the fish life more comfortable
  • Products include: 1 * mini fan
  • Manufacture: ZEROYOYO
  • Editor's Impressions Of The ZEROYOYO
  • Heat Quality [star rating='3.4']
  • Quality [star rating='3.6']
  • Value For Money [star rating='2.7']
  • Affordability [star rating='3.7']

ZEROYOYO Final Thoughts

"Thank you for reading."

Also were nice along the whole process. Well worth the money the first one I bought still works great. I emailed the email it says to and told them. The bonus digital thermometer it came with has been super helpful, and is accurate. No biggie, but annoying nonetheless. I would definitely recommend this product. They promptly fixed the issue without any delays or drama.

Overall Score
3.0

[star rating="3"]
(5 Points)

5. Marineland Precision Heater for Saltwater or Freshwater Aquariums

User Ratings: 64 17

MarineLand ML90652 First Impressions

"There was only~0."

No biggie, but annoying nonetheless. My heater is fully submerged underwater and works perfectly fine. The controller is easy to use, very accurate and reliable. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. Easy enough to let it run all the time. I waited a little bit to write the review so it could be accurate. I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees.

  • Marineland Precision Heater for Saltwater or Freshwater Aquariums
  • This 200 watt heater is for aquariums up to 55 gallons. Adjustable temperature dial allows you to set the temperature 1 degree with every click.
  • Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
  • The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display
  • Easy to view sliding scale tells the exact temperature setting. Top dial view shows the setting from an additional location.
  • Manufacture: Marineland
  • Product Dimensions: 3.94 x 1.63 x 14.81 inches; 10.4 Ounces
  • Editor's Impressions Of The MarineLand ML90652
  • Heat Quality [star rating='3.9']
  • Quality [star rating='4.1']
  • Value For Money [star rating='3']
  • Affordability [star rating='4.3']

MarineLand ML90652 Final Thoughts

"I like the size."

Once I opened the box i noticed the quality of the construction. The red light means it's off, blue light means the temperature is constant. My fish likes to get close to it and he has never been hurt by it. 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! 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.

Overall Score
4.0

[star rating="4"]
(1306 Points)

6. Submersible Aquarium Heater 300w 100w 200w, Anti-Explosion Fish Tank Water Heater and Thermometer wi...

User Ratings: 63 7

Sunyiny First Impressions

"Overall happy."

This is a powerful heater that holds temperature very well. The temperature difference was very minor. Or better yet, conceal it to the back corner. Product was received fast, works excellent! Checked the accuracy of the heater with an infrared thermometer. I left seller feedback yesterday but have yet to hear from the seller. The controller is easy to use, very accurate and reliable.

  • Submersible Aquarium Heater 300w 100w 200w, Anti-Explosion Fish Tank Water Heater and Thermometer with Adjustable Temperature for 20 Gallon,30 Gallon, 50 Gallon Tank,with 2 Pieces Suction Cup Suckers
  • Made of quartz glass,double seal material,high temperature resistant and explosion-proof,shatter-resistant construction, ensures safe operation and keep your fishes from scalding and punching.
  • Visible temperature setting,precise temperature setting to 1-degree F, temperature setting range: 20°~34°C(65° F - 93° F),automatic adjustment temperatures,the cord is about 2.63ft.
  • Fully submerged design,which can maintain the set temperature accurately, equipped with strong support hooks and suckers, fully submersible working on the maximum depth 3.9ft of water,mains power indicator for peace of mine.
  • With sensitive temperature regulator and over-temperature protection device, reliable and high impedance circuit heating wire heating, keep the fish tank water temperature stability, extend its service life.
  • Perfect for fresh and saltwater,submersible power: 100w, ideal for 32 gallon, provide a constant warm environment for your tropical African cichlids or other fish to stay healthy.
  • Manufacture: Sunyiny
  • Editor's Impressions Of The Sunyiny
  • Heat Quality [star rating='4.7']
  • Quality [star rating='5']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.8']

Sunyiny Final Thoughts

"I'll see with these."

Well worth the money the first one I bought still works great. Maintains it well except when the weather is already warm then it over heats it. I tested it by unplugging and replugging it. I have it set to 81F to get a 77F water temp. This heater is NOT fully submersible. Sometimes you may have to tinker around with the dial. The heater is super thin and the reflective surface is interesting.

Overall Score
4.2

[star rating="4.2"]
(284 Points)

7. 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 [star rating='4.8']
  • Quality [star rating='4.6']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.4']

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

[star rating="4.4"]
(348 Points)

8. HITOP Adjustable PTC Aquarium Heater, 100W 200W 300W Submersible Fish Tank Heater for 10-120Gal Fres...

User Ratings: 72 5

HITOP HP-M3 First Impressions

"One word of caution."

So if you set it to 78 degrees, the heater will not kick on until it reads 76. I confirm it with my cooking digital probe thermometer. I recieved this product without the instructions or the added thermometer. The line is there due to regulations in certain countries. 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! So far I like it setup was super easy.

  • HITOP Adjustable PTC Aquarium Heater, 100W 200W 300W Submersible Fish Tank Heater for 10-120Gal Freshwater and Saltwater Fish Tank
  • [PTC ceramic heating element] Compared with the fish tank heater heated by resistance wire, this 300W PTC ceramic fish tank heater has the obvious advantages of high heating efficiency, low energy consumption, long service life and anti-rust.
  • [Adjustable and easy to use] Adjustable rang is 63-90°F. After set the temp you want, when the tank-temp reaches the set-temp, it will stop heating auto, and when the tank-temp is lower than the set-temp, it will start heating auto, easy to operate.
  • [Accurate] The ultra-sensitive internal temperature detection system can sense the tank-temp change in time, so that it can be heated and stopped in time to keep the fish at a comfortable temperature. Therefore this fish heater can also avoid overheating.
  • [Removable protective shell] This aquarium heater has a detachable protective shell, which can not only prevent aquarium pets from being injured by touching the heating part, but also can be easily removed for cleaning.
  • [Compact design/60-120gal] Size: 11.4*2.2*1.2in, simple rectangle design, not only easy to hide, but also save space. This 300W aquarium heater is suitable for 50-120 Gallon large and medium-sized fish tanks and turtle tanks.Comes with 4 suction cups and a stick-on thermometer.
  • Fast heating
  • Power saving
  • Can be used for marine fish tanks
  • Manufacture: Haisen
  • Product Dimensions: 11.4 x 2.2 x 1.2 inches; 1.24 Pounds
  • Editor's Impressions Of The HITOP HP-M3
  • Heat Quality [star rating='4']
  • Quality [star rating='3.6']
  • Value For Money [star rating='4.4']
  • Affordability [star rating='5']

HITOP HP-M3 Final Thoughts

"No copper lines!"

I waited a little bit to write the review so it could be accurate. This has been in my fish tank for a few months now and it's been absolutely perfect! I wouldn't buy any other heater, unless one of these stops working. The design is sleek and modern looking. The temperature has been holding all day, even in a colder room. This has been in my fish tank for a few months now and it's been absolutely perfect! This has been in my fish tank for a few months now and it's been absolutely perfect!

Overall Score
4.4

[star rating="4.4"]
(361 Points)

9. JBJ Arctica Aquarium Chiller, 1/15 HP

User Ratings: 71 11

JBJ DBI-050-D First Impressions

"I do recommend."

I am very happy with this purchase. No biggie, but annoying nonetheless. The heater is easy; turn the dial to set temp and plug in. I emailed the email it says to and told them. So far I like it setup was super easy. The heater is easy; turn the dial to set temp and plug in. Seems to keep the temp n the tank fairly regular.

  • JBJ Arctica Aquarium Chiller, 1/15 HP
  • One of the most quietest chillers out in the market; highly efficient condenser-uses less energy; Titanium coils are the most efficient for heat exchanging; corrosion resistant; contemporary and small foot print design.
  • Quick installation; in line series
  • The ost advanced aquarium Chiller
  • Country Of Origin: China
  • Manufacture: Transworld Aquatic
  • Product Dimensions: 12 x 16 x 15 inches; 25 Pounds
  • Editor's Impressions Of The JBJ DBI-050-D
  • Heat Quality [star rating='4.1']
  • Quality [star rating='3.5']
  • Value For Money [star rating='3.3']
  • Affordability [star rating='5']

JBJ DBI-050-D Final Thoughts

"7L Imagitarium tank."

Easy to read the temp and know exactly how warm the water is. I emailed the email it says to and told them. They promptly fixed the issue without any delays or drama. The controller is easy to use, very accurate and reliable. No biggie, but annoying nonetheless. When i installed them, i let them sit in the tanks without power for 6-24 hours. My marina heater takes a few hours.

Overall Score
4.2

[star rating="4.2"]
(25 Points)

10. 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 [star rating='5']
  • Quality [star rating='3.6']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.9']

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

[star rating="4.5"]
(77 Points)

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