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. Aquarium Heater 500W/800W/1000W/1200W, Double Heating Tubes, Fast Heating and Power Saving, External...

User Ratings: 55 36

TINTOR First Impressions

"Looks as advertised."

This has been in my fish tank for a few months now and it's been absolutely perfect! Maintains it well except when the weather is already warm then it over heats it. I was worried about the quality but I am thoroughly impressed with this heater! Product was received fast, works excellent! It is safe and dependable and comes with a one year warranty. Easy enough to let it run all the time. This heater is NOT fully submersible.

  • Aquarium Heater 500W/800W/1000W/1200W, Double Heating Tubes, Fast Heating and Power Saving, External Digital Temp Controller, Used for 50-160 Gallon Fresh/Salt Water Fish Tanks
  • 【PRECISE TEMPERATURE CONTROL】The built-in PID chip realizes rapid heating, smart constant temperature, stability and precision, temperature setting range is 68~93ºF and the temperature difference is within ±1ºF. The heater provides a comfortable living environment for your aquatic creatures
  • 【SAFE AND DURABLE】Explosion-proof quartz tube, special safety design for auto shut off when overheating or not fully submerged. The heater provides a super safe living environment for your fish.
  • 【REALTIME TEMPERATURE DISPLAY】The LED digital display controller displays the real-time water temperature and set temperature, so you can keep track of the fish tank temperature at any time.
  • 【HIGH-QUALITY MATERIAL】ABS plastic integral molding, no deformation, no softening, explosion-proof and anti-corrosion, no pollution, high insulation strength, suitable for both fresh water and sea water. The double-row suction cup bracket can stably fix the heater on any corner of the fish tank
  • 【Four Size Available】500W(50-80 gal), 800W(80-105 Gal), 1000W(105-130 Gal), 1200W(130-160 Gal).
  • Manufacture: TINTOR
  • Editor's Impressions Of The TINTOR
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

TINTOR Final Thoughts

"Long heater."

I love the heater otherwise, but I'm afraid some water has gotten inside the heater. This has been in my fish tank for a few months now and it's been absolutely perfect! Now, both points are clear on the package instructions. The temperatures are pretty accurate. Come on Fluval, expect better from you. The suction cups are large, high quality and seem to stick great. Very easy to install and the adjustable temperature gauge is pretty accurate.

Overall Score
3.5


(14 Points)

3. 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)

4. Sheye 500W Aquarium Heater, Fast Heating Submersiber Thermostat, Fish Tank Heaters with LED Digital ...

User Ratings: 68

Sheye First Impressions

"This heater works great."

Takes a little while to drop the temps if it is hot in the garage. It comes with a hanging kit and can be secured on the edge of the tank. The line is there due to regulations in certain countries. I waited a little bit to write the review so it could be accurate. Once attached to the tank wall I've had no issues with it coming off. I contacted the manufacturer and they sent me a new unit in less than a week! I left seller feedback yesterday but have yet to hear from the seller.

  • Sheye 500W Aquarium Heater, Fast Heating Submersiber Thermostat, Fish Tank Heaters with LED Digital Display and External Temperature Controller, for Salt/Fresh Water (Stainless Steel)
  • 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

"Peace out."

--The cylinder or rod diameter is bigger. This heater works, but the dial it isn't very accurate. I appreciate the exterior temp readout and control module. They shipped us the upgraded version that also heats! Come on Fluval, expect better from you. It took about an hour to reach 80f, which is fairly quick. 210 gallon ones and one 90 gallon bow front tank.

Overall Score
4.4


(11 Points)

5. 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
  • Quality
  • Value For Money
  • Affordability

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


(249 Points)

6. Eheim Thermocontrol e50 Heater

User Ratings: 77 23

Eheim AEH3632090 First Impressions

"Works just as advertised!"

This is a great heater that is very easy to set up and program. It is a bonus that the heater is titanium. Beware, but we are hoping for a good outcome! When i installed them, i let them sit in the tanks without power for 6-24 hours. It's only been set up for a month we'll see how well it does in a few months. I appreciate the exterior temp readout and control module. I got this heater for my 55 gallon aquarium.

  • Eheim Thermocontrol e50 Heater
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 50W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 6. 5-15 Gallons Height: 9. 2" Power Cord Length: 5. 5'
  • Item Package Height: 3.0
  • Item Package Length: 20.0
  • Item Package Width: 3.0
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3632090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3632090 Final Thoughts

"So far so good."

I appreciate the exterior temp readout and control module. Seems to keep the temp n the tank fairly regular. I left seller feedback yesterday but have yet to hear from the seller. Also were nice along the whole process. I used to try those other cheap heaters sold on amazon. The temperatures are pretty accurate. I would definitely recommend this product.

Overall Score
4.1


(6 Points)

7. Aqueon Adjustable PRO Aquarium Heater 100 Watts

User Ratings: 70 9

Aqueon 100532084 First Impressions

"Thank you for reading."

I got this heater for my 55 gallon aquarium. Checked the accuracy of the heater with an infrared thermometer. There is a misconception on the internet that the heater isn't fully submersible. What more could you ask for great job Hygger Duncan. The temperatures are pretty accurate. I was worried about the quality but I am thoroughly impressed with this heater! When i installed them, i let them sit in the tanks without power for 6-24 hours.

  • Aqueon Adjustable PRO Aquarium Heater 100 Watts
  • 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: Central Garden & Pet
  • Product Dimensions: 1.5 x 1.75 x 10.38 inches; 10.4 Ounces
  • Editor's Impressions Of The Aqueon 100532084
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqueon 100532084 Final Thoughts

"Works great."

We would consider a replacement and then we would return the defective unit. I tested it by unplugging and replugging it. I'm not a big fan of the big glass tubes. I emailed the email it says to and told them. They promptly fixed the issue without any delays or drama. Per my thermometers, they are all staying constant. This product came in the nick of time!

Overall Score
4.3


(126 Points)

8. 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
  • Quality
  • Value For Money
  • Affordability

HITOP HP 608 Final Thoughts

"So far it seems great!"

I tested it by unplugging and replugging it. The red light means it's off, blue light means the temperature is constant. The heater is easy; turn the dial to set temp and plug in. It's pretty noticeable, but I don't really care. The temperature gauge is fairly accurate in my 55 gallon tank. This this is amazing and is worth the money. After several weeks of running the heater.

Overall Score
4.4


(960 Points)

9. hygger 200W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 15-30 Gallo...

User Ratings: 73 9

hygger HG-925 First Impressions

"Works fine."

I went ahead and went with the the larger 300W for my 45 gallon. It comes with a hanging kit and can be secured on the edge of the tank. I got a hold of Amazon, who put me in touch with the seller. Very easy to install and the adjustable temperature gauge is pretty accurate. Two inches above that is a waterline for maximum. This is a great heater that is very easy to set up and program. The temperature difference was very minor.

  • hygger 200W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 15-30 Gallon
  • 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 quartz and double sealed by black protective guard, this fish tank heater is resistant to 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. Heat indicator lights on red when fish heater start to heat and turns in yellow once it reach set temperature. Temp accuracy is +/- 1°F
  • Easy to set temperature without getting hands wet. Temperature can be precisely adjusted from 61 to 90°F (16°C ~ 32°C). Just press set button to desired temperature, it blinks 3 seconds and begins to work
  • 200 watt aquarium heater, voltage 110-120 V, heater rod 6.3 inches long, suitable for tank capacity 15-30 gallon freshwater and saltwater aquariums
  • IP68 100% Waterproof, Fully Submersible
  • Dual Protection - Durable Quartz Tube, resistant to corrosion; Double sealed material and protective container for scald preventing and anti punching Accurate temperature control from 61°F to 90°F (16°C ~ 32°C)
  • Easy to read blue LED digital display shows water temperature
  • Manufacture: hygger
  • Editor's Impressions Of The hygger HG-925
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

hygger HG-925 Final Thoughts

"Overall happy."

At this time I highly recommend this product. I wouldn't buy any other heater, unless one of these stops working. The controller is easy to use, very accurate and reliable. Personally for me the housing doesn't bother me. So if you set it to 78 degrees, the heater will not kick on until it reads 76. --Temperature adjustment labeling is on top rather than on the rod. The heater is being used in a 40 gallon breeder.

Overall Score
4.3


(31 Points)

10. Fish Tank Water Heater Chiller, 100-240V Water Cooling Heating Machine Thermostat for Aquarium 35L U...

Estink First Impressions

"I would call that a win."

Thanks for the great customer service! This this is amazing and is worth the money. This is only day one though, so I shall keep an eye one it. I was worried about the quality but I am thoroughly impressed with this heater! Product was received fast, works excellent! We would consider a replacement and then we would return the defective unit. I'm in the process of setting up for tanks.

  • Fish Tank Water Heater Chiller, 100-240V Water Cooling Heating Machine Thermostat for Aquarium 35L US Plug
  • 【Advantages and Function】Semiconductor refrigeration, environmental protection without pollution. Mute, low-power design. Digital display and advanced microcomputer intelligent temperature control technology are adopted. Celsius temperature and Fahrenheit temperature switching function. Suitable for small-scale refrigeration heating, aquaculture, aquarium.
  • 【Danger】When installing a cold water machine or hand in the water, please be sure to unplug the power plug first;When the thunder comes, please unplug the power wipe head; To prohibit the use of wet hand plug, pull the power plug, otherwise it will cause electric shock or injury;Please use a dedicated power outlet, do not share the same socket with other high-power electrical appliances at the same time, avoid causing the current too large to cause fire.
  • 【Warning】Please use AC220V or 110V power supply, please do not use other power supply (according to the different regions of the use of the power supply voltage is not the same, can not be universal, please note);This product is prohibited to be placed in a stable, high temperature, direct sunlight, smoke, ventilation, moisture in a large location;Prohibition block the vents. Do not store foreign objects near the vents;To prohibit the insertion of metal debris, wire, needle and other
  • 【Cleaning and maintenance】Before cleaning and maintenance, please make sure that the power plug has been pulled out; Please use a clean and absorbent soft cloth to wipe the cover, the body and other parts to keep the appearance clean. (Note: please do not use a wet cloth to wipe the operation panel, plug and power cord.); Do not use corrosive liquid medicine and hard objects to clean the product. (detergent powder, gasoline, banana water, hard brush, etc.)
  • 【Attention】When in use, the product is forbidden to be inverted or horizontal;Pull off the plug, you must hold the plug handle, can not pull the power cord, or easy to damage the power cord;When handling, please unplug the power cord plug, Do not put in the high temperature environment (room temperature 36℃ above, fish tank bottom tank, sealed place, etc.), may cause the slow cooling or failure.
  • Estink is a registered brand and it is professional in various product categories for several years. Advanced equipment with solid techniques are adopted and our high quality products are strictly tested before being put into market. 'Quality First, Customer Superior' is always our aim. Every product is designed carefully aiming to add simple and comfortable elements to your lives.
  • Semiconductor refrigeration, environmental protection without pollution.Mute, low-power design.Digital display and advanced microcomputer intelligent temperature control technology are adopted.Celsius temperature and Fahrenheit temperature switching function.Suitable for small-scale refrigeration heating, aquaculture, aquarium.
  • The attachment
  • Manufacture: Estink
  • Editor's Impressions Of The Estink
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Estink Final Thoughts

"Very easy and accurate."

The line is there due to regulations in certain countries. This heater is NOT fully submersible. I emailed the email it says to and told them. --The heater itself is a bit shorter if your tank is a short one. I have a 10gallon tank that was at 72 degrees. If the blue light is flashing it means the heater is not fully submersible. It took me a few days slowly turning the dial up to finally get it where I wanted.

Overall Score
4.0


(1 Points)

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