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']

Here Are Some Other Related Aquarium Heaters

2. Aqua Euro USA Apex Chiller Horsepower: 1/10 HP

Aqua Euro USA AC10A First Impressions

"Can be hidden."

Sometimes you may have to tinker around with the dial. There is a misconception on the internet that the heater isn't fully submersible. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. Or better yet, conceal it to the back corner. This this is amazing and is worth the money. I contacted the manufacturer and they sent me a new unit in less than a week! Or better yet, conceal it to the back corner.

• Aqua Euro USA Apex Chiller Horsepower: 1/10 HP
• Titanium heat exchanger features a high BTU rating for superior heat removal
• Aquarium water chiller designed with quiet operation-rubber mounts to reduce vibration
• Powerful compressor uses Freon-free and ozone-friendly R134a refrigerant
• 1/10th Horsepower Rating
• Manufacture: Aqua Euro USA
• Item Weight: 29 pounds
• Product Dimensions: 15.7 x 8.6 x 16.4 inches

• Editor's Impressions Of The Aqua Euro USA AC10A
• Heat Quality [star rating='2.7']
• Quality [star rating='4']
• Value For Money [star rating='3.5']
• Affordability [star rating='3.9']

3. ISTA Micro Temperature Controller Thermostat 500W/1000W Heater Heating Aquarium Tank Globally

User Ratings: 39 29

Aquarium Equip I630_1000W ISTA First Impressions

"And I am glad I did."

My heater is fully submerged underwater and works perfectly fine. At this time I highly recommend this product. Would be great to be able to tune that to. I wouldn't buy any other heater, unless one of these stops working. I use a 50 for a 5 gal and a 10 gal tank. This is a great heater that is very easy to set up and program. The design is sleek and modern looking.

• ISTA Micro Temperature Controller Thermostat 500W/1000W Heater Heating Aquarium Tank Globally
• This Digital Temperature Controller is an excellent and convenient multifunction device for measuring and controlling temperature in Aquariums.
• The stability of aquarium temperature is one of the crucial factors that contributes to the health and safety of your fish.
• By utilizing the temperature controller, you can provide an environment with optimal temperature for your fish. This advanced temperature controller can measure and control temperature from 20 to 35 °C in Aquarium.
• It has 3 power socket and maximum loading power is up to 1000 W. The controller set provides two Free500W Heating Rod ing Rod . The heating rod has over heating protection so it will automatic power off for heating rod when measured temperature reach 36 °C.
• For aquarium in-door use only.
• Manufacture: ISTA
• Product Dimensions: 12.09 x 7.2 x 5 inches; 2.09 Pounds

• Editor's Impressions Of The Aquarium Equip I630_1000W ISTA
• Heat Quality [star rating='4.2']
• Quality [star rating='3']
• Value For Money [star rating='3.7']
• Affordability [star rating='3.3']

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 [star rating='3.5']
• Quality [star rating='3.9']
• Value For Money [star rating='4.9']
• Affordability [star rating='3.7']

5. 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 [star rating='3.6']
• Quality [star rating='5']
• Value For Money [star rating='4.5']
• Affordability [star rating='3.4']

6. 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']

7. Submersible Aquarium Heater 100/300/500 Watt Fish Tank Heater with Dual Temperature Displays and Tem...

User Ratings: 74 12

BinChang First Impressions

"5 stars in my book!"

--Temperature adjustment labeling is on top rather than on the rod. What more could you ask for great job Hygger Duncan. --The heater itself is a bit shorter if your tank is a short one. The setting always stayed the same. So when I first received it it didn't work and I was very disappointed. Was very impressed with the quality of this heater. No biggie, but annoying nonetheless.

• Submersible Aquarium Heater 100/300/500 Watt Fish Tank Heater with Dual Temperature Displays and Temp Controller Adjustable for Turtle Betta Fish Tank 5-130 Gallon
• ❀【100 Watt Heater】This 100W is suitable for 5-25 gallons tank, heater length is 10.8 inches, power cord length is 47 inches+67 inches, please choose the right wattage aquarium heater according to our size chart.
• ❀【External Temperature Controller】 This submersible aquarium heater is designed to control the temperature externally, which is convenient and safe for you to adjust temperature and no need to take the heater out from water and risk burning yourself.
• ❀【Dual Temperature Displays】 It shows the water temp and set temp at the same time, helping you easily recognize and observe the temp change in real time even in the night!
• ❀【High Quality】 It is made of shock resistant and shatter proof quartz for fresh or marine water. Besides, the heatproof cover will also protect you little fish from scalding.
• ❀【PLEASE NOTE】 Aquarium heater should be fully submerged into the water. Please unplug the power supply when cleaning the fish tank, changing aquarium water or taking the heater out (and should let it cool in the water for a while before you take it out).
• Manufacture: BinChang

• Editor's Impressions Of The BinChang
• Heat Quality [star rating='4.4']
• Quality [star rating='4.2']
• Value For Money [star rating='4.4']
• Affordability [star rating='5']

8. 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']

9. 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 [star rating='4.3']
• Quality [star rating='3.9']
• Value For Money [star rating='4.1']
• Affordability [star rating='4']

10. Uniclife Aquarium Heater Submersible with Thermometer, 50 Watt for 10 Gallon Fish Tank

User Ratings: 83

Uniclife First Impressions

"Long heater."

At this time I highly recommend this product. At this time I highly recommend this product. Per my thermometers, they are all staying constant. I waited a little bit to write the review so it could be accurate. It does blend well in some setups and may look bulky in others. If the blue light is flashing it means the heater is not fully submersible. Awesome chiller, perfect for Hydroponics.

• Uniclife Aquarium Heater Submersible with Thermometer, 50 Watt for 10 Gallon Fish Tank
• Uniclife submersible heater, ideal for 5-15gal fish tanks, can be installed in both fresh and saltwater.
• Red rotatable knob on top for adjusting the temperatures between ranges of 68°F-93°F. Visible temperature displayed allows accurate temperature maintain.
• Please notice the red indicator light is on while working, will automatically turned off when temperature reached. Carefully check external condition before use. Recommend testing before introduce to fish.
• Water-tight with IP68 sealing workmanship. Fix the heater tightly to the tank in vertical or horizontal with 3 strong suction cups. Shatterproof 2 mm extra thick quartz glass prevents electricity leakage and scratching. Measures 8.6" x 1" (L x D)
• Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(Color of number will change to blue to indicate the temperature).
• By rotating the Red knob at the top you can simply set the temperature from 68 - 93°F.
• The red indicator light on while heating, automatic shut-off when reach the temp.
• The aquarium glass submersible heater must be fully immersed.
• Manufacture: Uniclife

• Editor's Impressions Of The Uniclife
• Heat Quality [star rating='4']
• Quality [star rating='4.9']
• Value For Money [star rating='5']
• Affordability [star rating='4.7']