Editor's Choice - Our Favorite NICREW Aquarium Heaters

1. NICREW Preset Aquarium Heater, Submersible Fish Tank Heater with Electronic Thermostat, UL Listed

User Ratings: 71 6

NICREW N11941 First Impressions

"Overall happy."

I will definitely be buying another one for my other tanks at bigger one. Just be careful and keep an eye on your temp settings when you have kids over! This heater is NOT fully submersible. The controller is easy to use, very accurate and reliable. I wouldn't buy any other heater, unless one of these stops working. The suction cups are large, high quality and seem to stick great. The temperature gauge is fairly accurate in my 55 gallon tank.

  • NICREW Preset Aquarium Heater, Submersible Fish Tank Heater with Electronic Thermostat, UL Listed
  • Preset to 78°F - no adjustment required, which is the ideal temperature for most tropical fish
  • Automatic safety shut-off to avoid overheating
  • Indicator light allows simple visual confirmation of heater operation (red: heating up; off: temperature reached or unplugged)
  • Made from heat, shatter resistant quartz glass to allows for safe temperature control
  • Suitable for 3 - 10 gallon freshwater, marine and tropical aquariums
  • Manufacture: NICREW
  • Editor's Impressions Of The NICREW N11941
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

NICREW N11941 Final Thoughts

"9 degrees."

The temperatures are pretty accurate. Awesome chiller, perfect for Hydroponics. The heater is being used in a 40 gallon breeder. What more could you ask for great job Hygger Duncan. They shipped us the upgraded version that also heats! Come on Fluval, expect better from you. I like to keep it at 72 and from my thermometer it is reading at exactly 72.

Overall Score
4.4


(647 Points)

Peoples Choice - Other Highly Rated NICREW Aquarium Heaters

2. 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)

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

User Ratings: 55 17

NICREW First Impressions

"Thank you for reading."

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

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

NICREW Final Thoughts

"Works fine."

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

Overall Score
4.0


(109 Points)

4. UPMCT Aquarium Heater, 50W 100W 300W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob...

User Ratings: 62 12

UPMCT First Impressions

"Love this heater!"

It is safe and dependable and comes with a one year warranty. I was worried about the quality but I am thoroughly impressed with this heater! I dont know, and havent tried just yet. We wish the controls were available in Farenheit also to make things a little easier. Beware, but we are hoping for a good outcome! I dont know, and havent tried just yet. Come on Fluval, expect better from you.

  • UPMCT Aquarium Heater, 50W 100W 300W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob Thermostat, Suitable for 5 to 85 Gallons
  • 【Quality Assurance】High-purity thick quartz explosion-proof crystal tube is used on the surface, there will be no rust spots, causing heavy metal damage to the fish. The double sealing waterproof can also prevent electric leakage, the fish will not be electrocuted due to leakage of the product. A heating guard with a high suction cup is provided as a gift, and the fish will not be burnt due to the fish touching the aquarium heater. Keep your fish live in a carefree warmth at any time!
  • 【Wide Range Of Temperature Adjustment】Bimetallic material, precise temperature control. Adjustable temperature ranges from 68°F to 94°F(20°C - 34°C), and you can choose the coziest temperature for your fish. (The suitable temperature range for most tropical fish is 76°F to 80°F/24°C -27°C ). At the same time, a temperature sticker is attached to the fish tank, allowing you to intuitively detect temperature changes at any time, so that you can use it with more confidence.
  • 【Suitable For 5-85 Gallon Tanks】50W aquarium heater is suitable for a 5 to 15 gallon tank, 100W aquarium heater is suitable for a 15 to 25 gallon tank. 300W aquarium heater is suitable for a 50 to 85 gallon tank. It is suitable for fresh water and sea water! Please confirm the wattage, tank capacity and other details before purchasing to select the aquarium heater with appropriate wattage.
  • 【Easy To Install】Can be installed vertically or horizontally, but the aquarium heater must be completely submerged in water. We also recommend placing it near a strong water flow, where the outlet of the mains filter is ideal, so that the temperature of the entire aquarium is the same.
  • 【How To Use】Immerse the aquarium heater completely into the aquarium or tank, wait for 10-15 minutes to let the internal temperature adapt to the actual water temperature in the tank. Then twist the thermostat knob, adjust the temperature to 68°-94°F and then connect to the power supply.
  • Manufacture: UPMCT
  • Product Dimensions: 10.5 x 1.1 x 1.1 inches; 10.5 Ounces
  • Editor's Impressions Of The UPMCT
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

UPMCT Final Thoughts

"No issues."

All seem to vary between 1-2 degrees of each other which doesn't concern me much. The temperature gauge is fairly accurate in my 55 gallon tank. I would definitely recommend this product. The red light means it's off, blue light means the temperature is constant. I got a hold of Amazon, who put me in touch with the seller. Ick for instance detaches from fish at 86 degrees and dies at 89. No biggie, but annoying nonetheless.

Overall Score
4.1


(379 Points)

5. CNZ EH-300W 300W Aquarium Glass Submersible Heater, 2-Pack

User Ratings: 63 7

CNZ First Impressions

"I have a betta in a 1."

The temperature gauge is fairly accurate in my 55 gallon tank. Am a totally sold customer and would recommend them to anybody! The setting always stayed the same. --The heater itself is a bit shorter if your tank is a short one. This product came in the nick of time! Easy to read the temp and know exactly how warm the water is. Ick for instance detaches from fish at 86 degrees and dies at 89.

  • CNZ EH-300W 300W Aquarium Glass Submersible Heater, 2-Pack
  • Fully submersible glass heater for reliable aquarium performance
  • Set desired aquarium temperature & on/off indicator light confirms operation
  • Fast heating and accurate heating temperature range is 68-93F (20-34C)
  • On/off indicator light allows simple, visual confirmation of heater operation
  • Wattage: 300-watt; Heater Length:14"; Tank Capacity: 75gal; Voltage: 110-120v 60Hz
  • Manufacture: CNZ
  • Editor's Impressions Of The CNZ
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

CNZ Final Thoughts

"No issues."

It does blend well in some setups and may look bulky in others. But my guys don't read them and don't listen! I have only had minor problems with the suction cups. I contacted the manufacturer and they sent me a new unit in less than a week! I got this heater for my 55 gallon aquarium. This this is amazing and is worth the money. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank.

Overall Score
4.2


(155 Points)

6. 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)

7. PERSUPER Aquarium Heater, 100W/200W Submersible Heater Fish Tank 10-40 Gallon Heater for Betta Turtl...

User Ratings: 68

PERSUPER First Impressions

"Works fine."

I like how the heater is constructed. --The cylinder or rod diameter is bigger. My heater is fully submerged underwater and works perfectly fine. Once I opened the box i noticed the quality of the construction. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. Would be great to be able to tune that to. It's only been set up for a month we'll see how well it does in a few months.

  • PERSUPER Aquarium Heater, 100W/200W Submersible Heater Fish Tank 10-40 Gallon Heater for Betta Turtle Adjust Thermostat Water Heater 68 to 94°F Fast Heating Temperature Controller with LED Display
  • Accurate Temperature Control: the intelligent IC chip is used for the aquarium heater. Press and hold the temperature control button for 3 seconds, switch between Fahrenheit and Celsius to control the temperature between 68 ° f / 20 ° C and 94 ° f / 34 ° C; this heater provides the best living environment for aquatic organisms.
  • Safety Assurance: it adopts the highest waterproof grade IP68, explosion-proof, and anti-corrosion. When heating, it is more resistant to damage than the traditional glass heater and has the function of overheating and water shortage protection. External temperature controller: touch the button controller to adjust the temperature without wetting your hands.
  • Constant Temperature Function: when the water temperature reaches the specified temperature, the smart system will automatically stop heating, when the water temperature is lower than the set temperature, it will automatically start heating.
  • Easy to Use: submersible heaters are suitable for all types of aquariums; they are installed vertically or horizontally to ensure that the equipment is completely submerged. The heating rod shall be completely immersed in water and cannot be heated without water. Please unplug the power supply when cleaning the fish tank or replacing the water in the fish tank.
  • Wide Compatibility: aquarium heater with CE, FCC, and ROHS certification, plug with UL certification; suitable for fresh water and marine aquarium, aquaculture, glass containers, and aquaculture system. 12 months warranty, 24-hour professional after-sales service.
  • Manufacture: PERSUPER
  • Editor's Impressions Of The PERSUPER
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

PERSUPER Final Thoughts

"Impressive."

Am a totally sold customer and would recommend them to anybody! I got a hold of Amazon, who put me in touch with the seller. Seems to keep the temp n the tank fairly regular. It comes with a hanging kit and can be secured on the edge of the tank. We received the chiller promptly and put it into use. It would stick out of my 30 g wide tank if I were to put it vertical. The design is sleek and modern looking.

Overall Score
4.4


(8 Points)

8. OASE HeatUp Aquarium Heater

User Ratings: 71

OASE Indoor Aquatics 33805 First Impressions

"5 gallon tank."

I am very happy with this purchase. My heater is fully submerged underwater and works perfectly fine. I dont know, and havent tried just yet. I would definitely recommend this product. The red light means it's off, blue light means the temperature is constant. There is no protection from it banging on the glass tank. This product came in the nick of time!

  • OASE HeatUp Aquarium Heater
  • The Oase HeatUp 300 Watt Aquarium Heater features uniform temperature level thanks to the patented bi-metal technology
  • 300 Watts. Recommended for tanks up to 80 gallons.
  • Glass construction. Fully submersible. Suction cups and bracket for securing to the aquarium.
  • Adjustable temperature control. The heating function is displayed via the activated control light. For use in fresh and saltwater aquariums.14.6" long.
  • 3 year manufacturer warranty. UL listed. Made in Italy.
  • Manufacture: Oase
  • Editor's Impressions Of The OASE Indoor Aquatics 33805
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

OASE Indoor Aquatics 33805 Final Thoughts

"Just bought a second one!"

So if you set it to 78 degrees, the heater will not kick on until it reads 76. This this is amazing and is worth the money. They shipped us the upgraded version that also heats! The temperature has been holding all day, even in a colder room. I think it works well to not stand out like other heaters. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. I was worried about the quality but I am thoroughly impressed with this heater!

Overall Score
4.5


(25 Points)

9. SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and...

User Ratings: 72 4

SALUTE First Impressions

"Very pleased so far."

This product came in the nick of time! I left seller feedback yesterday but have yet to hear from the seller. We received the chiller promptly and put it into use. Also were nice along the whole process. They shipped us the upgraded version that also heats! 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.

  • SALUTE Aquarium Heater Submersible Auto Thermostat Heater, (50W/100W/200W/300W) Fish Tank Heater and Adjustable Temperature with 2 Suction Cups Suitable for 10-115 Gallon Fish Tank
  • Accurate Temperature Control: Power: 300W. Suggested water volume: 75-115gal. The aquarium heater temperature can be adjusted automatically. It is very easy to adjust the temperature you need, Adjustable heater from 68°F to 93°F (20°C - 34°C). A good temperature range for most fishes is 76°F to 80°F (25- 27°C).
  • Suction Cup Fixing: Fish tank heater also equipped with 2 suction cups . The aquarium heater can be fixed at any position on the cylinder wall. The product's suction cups use thicker, non-aging materials, which greatly extend the life.
  • Safe to Use: Double waterproof protection, complete underwater design can accurately maintain the temperature. Aquarium heater with two individual suction units available for safety. Polarity prevention and the power conversion is safe and reliable. Easy operation and high temperature resistance, explosion-proof quartz glass tube, high safety!
  • High Quality: Excellent heat resistance, good thermostat Heater insulation, high heat transfer efficiency, strong support hooks and suction cups, the product is more stable and reliable.
  • 100% Money Back Guarantee: We are so confident you'll think we have the best submersible heater on the market. If you have any problems with aquarium heater, please feel free to contact us by email. We will offer a free replacement or full refund.
  • Manufacture: SALUTE
  • Editor's Impressions Of The SALUTE
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

SALUTE Final Thoughts

"So far so good."

This is a great heater that is very easy to set up and program. If the water runs low or air gets in the heater shuts off. This heater warmed it right up and now my Betta and guppies are more active. I dont know, and havent tried just yet. I'm not a big fan of the big glass tubes. And I get to keep the first one I bought! I got this heater for my 55 gallon aquarium.

Overall Score
4.5


(347 Points)

10. hygger Mini Betta Fish Heater for Small Fish Bowl 15W 25W 35W 50W Slim Aquarium Heater with LED Digi...

User Ratings: 55 19

hygger First Impressions

"So far its ok."

The temperature difference was very minor. Sometimes you may have to tinker around with the dial. Or better yet, conceal it to the back corner. I dont know, and havent tried just yet. I emailed the email it says to and told them. There is no protection from it banging on the glass tank. Sometimes you may have to tinker around with the dial.

  • hygger Mini Betta Fish Heater for Small Fish Bowl 15W 25W 35W 50W Slim Aquarium Heater with LED Digital Display up to 9 Gallon Tank 68°F to 94°F
  • Fully-submersible heater by Hygger is easy to install with included suction cups and slim profile, super tiny size just measures 3.5 in x 2 in x 0.8 in, can easily be wedged in a corner, great for small or partially filled tank
  • Bright, clear LCD display that shows real-time water temperature over guesswork is a big bonous, display in either Celsius or Fahrenheit, depending on your choice. Red indicator light indicates the heater is working and turns into blue once it reach to desired temperature
  • Build-in thermostat on the cord, this small fish heater can be easily adjusted temperature without getting your hands wet. The precision temperature control allows you to set the temperature between 68 and 94 degrees F in 2-degree increments
  • Betta Heater auto shut off when over-heats temperature over 97 degree Fahrenheit and flashing error code "E2". The nylon integrated fish guard prevents fish from scald and punching. Carbon heating element is more stable and safer than tranditional coil material
  • 15 watt aquarium heater is ideal for small wall fish bowls up to 2 gallon, betta tank, snail tank and turtle tank
  • Fully submersible heater
  • White LED digital number displays shows real time water temperature, free of thermometer.
  • Red light -- heating up water, blue light -- stop heating and maintain current temp
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

hygger Final Thoughts

"Great heater."

It took me only two tries to get it to the correct temperature. It does blend well in some setups and may look bulky in others. The red light means it's off, blue light means the temperature is constant. We would consider a replacement and then we would return the defective unit. This is only day one though, so I shall keep an eye one it. Well worth the money the first one I bought still works great. So far I like it setup was super easy.

Overall Score
3.8


(118 Points)

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