Editor's Choice - Our Favorite MarineLand Aquarium Heaters

1. 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)

2. Mylivell Aquarium Heater Submersible Auto Thermostat Fish Tank Water Heater and Adjustable Temperatu...

User Ratings: 70 5

Mylivell First Impressions

"Great concept."

This has been in my fish tank for a few months now and it's been absolutely perfect! The heater is super thin and the reflective surface is interesting. I recieved this product without the instructions or the added thermometer. Keeps the temperature within 1 degree of what you set it to at all times. I think it works well to not stand out like other heaters. Thanks for the great customer service! The suction cups are large, high quality and seem to stick great.

  • Mylivell Aquarium Heater Submersible Auto Thermostat Fish Tank Water Heater and Adjustable Temperature with Suction Cups
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.
  • Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20°~34°C(65° F - 93° F), and the display is easy to read.
  • Fully Submersible. Power: 100W. Suggested water volume: 20 gal.
  • Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.
  • Mylivell Submersible Aquarium Heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Fish water heater will be your best choice!
  • You will need an aquarium heater to keep your tank in a steady and controlled temperature, as proper temperature range is very important to fish and other Aquatic in winter.
  • Mylivell Submersible Aquarium Heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Fish water heater will be your best choice!
  • Manufacture: Mylivell
  • Product Dimensions: 11.6 x 2.7 x 1.5 inches; 7.2 Ounces
  • Editor's Impressions Of The Mylivell
  • Heat Quality [star rating='4.3']
  • Quality [star rating='4.8']
  • Value For Money [star rating='4.9']
  • Affordability [star rating='5']

Mylivell Final Thoughts

"Highly recommended."

I dont know, and havent tried just yet. Also were nice along the whole process. The line is there due to regulations in certain countries. Takes a little while to drop the temps if it is hot in the garage. But I am single and don't have to worry about this. After several weeks of running the heater. I think it works well to not stand out like other heaters.

Overall Score
4.5

[star rating="4.5"]
(1559 Points)

3. Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube

User Ratings: 61 12

Finnex HMA-500 First Impressions

"Yes, you read that right."

I was worried about the quality but I am thoroughly impressed with this heater! I will definitely be buying another one for my other tanks at bigger one. We received the chiller promptly and put it into use. I emailed the email it says to and told them. This heater warmed it right up and now my Betta and guppies are more active. I waited a little bit to write the review so it could be accurate. The temperature lights up so it's very easy to read.

  • Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube
  • Titanium Tube
  • Sleek analog controller
  • HMA 500: 100-120 Gallons
  • Manufacture: JSK Merchandise Inc.
  • Product Dimensions: 14.48 x 1 x 1 inches; 14.4 Ounces
  • Editor's Impressions Of The Finnex HMA-500
  • Heat Quality [star rating='3.9']
  • Quality [star rating='4.7']
  • Value For Money [star rating='4.3']
  • Affordability [star rating='3.9']

Finnex HMA-500 Final Thoughts

"I would buy again."

This has the best controller that I have found on the market. 210 gallon ones and one 90 gallon bow front tank. The heater is easy; turn the dial to set temp and plug in. The heater is being used in a 40 gallon breeder. This heater works, but the dial it isn't very accurate. It's only been set up for a month we'll see how well it does in a few months. This product came in the nick of time!

Overall Score
4.1

[star rating="4.1"]
(287 Points)

4. PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

User Ratings: 75 7

PULACO PL-168 First Impressions

"5 gallon tank."

I would definitely recommend this product. It just cycles through to 93f and starts over. The setting always stayed the same. The suction cups are large, high quality and seem to stick great. I like to keep it at 72 and from my thermometer it is reading at exactly 72. Keeps the temperature within 1 degree of what you set it to at all times. I am very happy with this purchase.

  • PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks
  • ★【Betta Heater】This Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.
  • ★【Quick and Easy Installation】:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.
  • ★【How it Works】: Plug in, red light turns on, the heater will start working until water temperature up to 78°F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°F. Accuracy:±3°F
  • ★【Note】: Do not operate or leave product plugged in when it is outside of water, Children should be use this heater under adult's guidance.
  • ★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
  • Please install and use this heater under rated voltage conditions(110V-120V/60Hz).
  • This heater is designed for small fresh/sea water tanks, please do not use it in chemical water or any other heating purpose, it may damage the heater.
  • Children should be use this heater under adult's guidance.
  • Manufacture: PULACO
  • Product Dimensions: 5.5 x 1.2 x 2.7 inches; 4.48 Ounces
  • Editor's Impressions Of The PULACO PL-168
  • Heat Quality [star rating='5']
  • Quality [star rating='3.7']
  • Value For Money [star rating='3.5']
  • Affordability [star rating='4.7']

PULACO PL-168 Final Thoughts

"I would call that a win."

It took me a few days slowly turning the dial up to finally get it where I wanted. I have it set to 81F to get a 77F water temp. Checked the accuracy of the heater with an infrared thermometer. You program it for temperature you want your tank to be. Temperature is slightly off by running a little warmer. The heater is easy; turn the dial to set temp and plug in. The suction cups are large, high quality and seem to stick great.

Overall Score
4.5

[star rating="4.5"]
(1130 Points)

5. hygger 300W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 30-60 Gallo...

User Ratings: 79 5

hygger HG-925 First Impressions

"Thank you for reading."

They shipped us the upgraded version that also heats! But I am single and don't have to worry about this. Ick for instance detaches from fish at 86 degrees and dies at 89. I confirm it with my cooking digital probe thermometer. This is a powerful heater that holds temperature very well. I am very happy with this purchase. Was very impressed with the quality of this heater.

  • hygger 300W Aquarium Heater with LED Display Controller Submersible Fish Tank Heater for 30-60 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
  • 300 watt aquarium heater, voltage 110-120 V, heater rod 7.7 inches long, suitable for tank capacity 30-60 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 [star rating='5']
  • Quality [star rating='3.8']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='3.6']

hygger HG-925 Final Thoughts

"Impressive."

I would definitely recommend this product. And I get to keep the first one I bought! It would stick out of my 30 g wide tank if I were to put it vertical. What more could you ask for great job Hygger Duncan. I waited a little bit to write the review so it could be accurate. Will update my review if any changes occur. I recieved this product without the instructions or the added thermometer.

Overall Score
4.6

[star rating="4.6"]
(77 Points)

6. hygger 50W 100W Submersible Digital Display Mini Aquarium Heater for Small Fish Tank, Compact and Fa...

User Ratings: 67 10

hygger First Impressions

"This heater works great."

The red light means it's off, blue light means the temperature is constant. 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. This does a great job at regulating the temp in my 10 gallon. This heater works, but the dial it isn't very accurate. My heater is fully submerged underwater and works perfectly fine. The bonus digital thermometer it came with has been super helpful, and is accurate.

  • hygger 50W 100W Submersible Digital Display Mini Aquarium Heater for Small Fish Tank, Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta Turtle
  • 【Compact Small Heater】110-120V/60HZ oval shape design little aquarium heater, fast heating for small fish tank. 50W tank heater is for 1-6.5gallon, 100W tank heater is for 6.5-13 gallon. Heater Dimension: 2.7x1.4x 4.5 inch. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater, it's easy to install it on to glass, acrylic or plastic tank
  • 【External Controller】easy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63℉ to 94℉, temp accuracy 1℉. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done. Keep the controller away from water, it's not waterproof
  • 【Digital Display】with led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. The led will display the set temp digit only when you press the controller
  • 【Reliable Thermostat】this an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. The tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1℉ off the set temp. If the water temp is over 95℉, the heater will auto shut off and led displaying HH, it will work normally again when the water temp is lower than 95℉
  • 【Shut off When Out of Water】please note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying E1, when fully in water again it will return to normal work again
  • Compact and small shape, with plastic guard.
  • It has memory function if power failure happens.
  • With 2 strong suction cups, can be replaced.
  • Manufacture: hygger
  • Product Dimensions: 2.76 x 1.38 x 4.53 inches; 9.59 Ounces
  • Editor's Impressions Of The hygger
  • Heat Quality [star rating='3.7']
  • Quality [star rating='3.4']
  • Value For Money [star rating='3.3']
  • Affordability [star rating='3.2']

hygger Final Thoughts

"I have a 5."

I appreciate the exterior temp readout and control module. I will definitely be buying another one for my other tanks at bigger one. I adjusted the set temperature a little lower to be more in the range I wanted. What more could you ask for great job Hygger Duncan. The heater is being used in a 40 gallon breeder. When i installed them, i let them sit in the tanks without power for 6-24 hours. Temperature is slightly off by running a little warmer.

Overall Score
4.2

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

7. HITOP 500W Aquarium Heater with Temperature Display, Submersible Fish Tank Heater with Adjustable Bu...

User Ratings: 57 15

HITOP First Impressions

"Until the next time."

I wouldn't buy any other heater, unless one of these stops working. Easy enough to let it run all the time. I'm not a big fan of the big glass tubes. They promptly fixed the issue without any delays or drama. It took me a few days slowly turning the dial up to finally get it where I wanted. I noticed my old hygger heater beginning to fail and my wife ordered this one. Sometimes it gets outside of it's ability to cool but only within a few degrees.

  • HITOP 500W Aquarium Heater with Temperature Display, Submersible Fish Tank Heater with Adjustable Button for 100-200 Gallon
  • [Top grade Material for Heating Elements]: 500W, 10.6*2.8*1.2 inches, Ni-cr Alloy heating element, eliminated the disadvantages of easy-broken of quartz glass, characterized by high resistivity, thermal fatigue resistant, corrosion resistance and high temperature shape stability, top grade heating element for heaters.
  • [Real-time Water Temperature Monitor]: Dynamically display real-time temperature, convenient to monitor the water temperature. Adopting an 100K 10% internal high-efficiency temperature sensor, more accurate and rapid to detect temperature fluctuations. More reliable and longer service life.
  • [External Temperature Adjuster]: External circulating temperature control device, 60℉~93 / 16℃~34℃, more convenient and safer.
  • [Automatically Cut-off when Leave out of Water]: Equipped with Auto-off device,the heater will power off automatically when leaving water,it’s much safer to protect people and fish.
  • [More Accurate Temperature Control]: Heating part is separated from electric parts, this can protect and lengthen the life of the electric elements, also can make the temperature controlling more accurate, error ±1℉/0.5℃.
  • Manufacture: Haisen
  • Editor's Impressions Of The HITOP
  • Heat Quality [star rating='3.3']
  • Quality [star rating='4.9']
  • Value For Money [star rating='3.8']
  • Affordability [star rating='4']

HITOP Final Thoughts

"The seller was wonderful."

The heater is super thin and the reflective surface is interesting. The design is sleek and modern looking. Ick for instance detaches from fish at 86 degrees and dies at 89. This is a powerful heater that holds temperature very well. We wish the controls were available in Farenheit also to make things a little easier. Just be careful and keep an eye on your temp settings when you have kids over! So far I like it setup was super easy.

Overall Score
3.9

[star rating="3.9"]
(127 Points)

8. 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)

9. ZHFEISY 300w Aquarium Fish Tank Cooler Electronic Water Chiller Cooling Machine 100L

User Ratings: 54 46

ZHFEISY First Impressions

"5 stars in my book!"

But my guys don't read them and don't listen! I emailed the email it says to and told them. Personally for me the housing doesn't bother me. For Discus you need warm and accurate heater and this seems to do the trick. I dont know, and havent tried just yet. It would stick out of my 30 g wide tank if I were to put it vertical. The red light means it's off, blue light means the temperature is constant.

  • ZHFEISY 300w Aquarium Fish Tank Cooler Electronic Water Chiller Cooling Machine 100L
  • 【Product Parameters】 Working voltage: AC110V /60HZ; Machine power: 300W; Take-over specifications: 8MM hose; Temperature probe length: 1.2M;
  • 【Features】1. Real-time temperature display, simple operation setting; 2, Automatic temperature control and energy saving, start cold quickly (<5 seconds)
  • 【Connection】An external pump is required to pump water or directly in series with the flow pipe.
  • 【Application】Applicable to seawater, fresh water and medium and low acid and alkaline environment.
  • 【1-Year Warranty】If you need refund/return or have any questions, plz feel free to contact us.
  • Manufacture: ZHFEISY
  • Editor's Impressions Of The ZHFEISY
  • Heat Quality [star rating='2.7']
  • Quality [star rating='3.2']
  • Value For Money [star rating='2.8']
  • Affordability [star rating='2.6']

ZHFEISY Final Thoughts

"Pricing was good."

I appreciate the exterior temp readout and control module. There is no protection from it banging on the glass tank. This heater is NOT fully submersible. I wouldn't buy any other heater, unless one of these stops working. Now, both points are clear on the package instructions. Maintains it well except when the weather is already warm then it over heats it. It would stick out of my 30 g wide tank if I were to put it vertical.

Overall Score
3.2

[star rating="3.2"]
(2 Points)

10. 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']

MONIPA Final Thoughts

"I like it."

I love the heater otherwise, but I'm afraid some water has gotten inside the heater. I emailed the email it says to and told them. Would be great to be able to tune that to. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. It does blend well in some setups and may look bulky in others. I confirm it with my cooking digital probe thermometer. The bonus digital thermometer it came with has been super helpful, and is accurate.

Overall Score
3.0

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

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