Editor's Choice - Our Favorite K&H PET PRODUCTS Aquarium Heaters

1. K&H Pet Products Perfect Bucket Heater w/ Cord Clip Gray 5" 80W

User Ratings: 74 9

K&H PET PRODUCTS 100213458 First Impressions

"Problem solved."

Now, both points are clear on the package instructions. We would consider a replacement and then we would return the defective unit. My fish likes to get close to it and he has never been hurt by it. 210 gallon ones and one 90 gallon bow front tank. I'm in the process of setting up for tanks. It is safe and dependable and comes with a one year warranty. It's pretty noticeable, but I don't really care.

  • K&H Pet Products Perfect Bucket Heater w/ Cord Clip Gray 5" 80W
  • Safely Maintains open water to -20 Degree
  • Durable Enamel finish is easy to clean
  • Thermostatically controlled, using Only 80 watts
  • Free cord safety clip included
  • This K&H deicer has been tested & certified by MET Labs to exceed USA/CA electrical safety standards
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 8.15 x 5.6 x 2.35 inches; 1.11 Pounds
  • Editor's Impressions Of The K&H PET PRODUCTS 100213458
  • Heat Quality [star rating='5']
  • Quality [star rating='4.1']
  • Value For Money [star rating='3.6']
  • Affordability [star rating='4.7']

K&H PET PRODUCTS 100213458 Final Thoughts

"Looks as advertised."

So far I like it setup was super easy. This is only day one though, so I shall keep an eye one it. The temperatures are pretty accurate. When i installed them, i let them sit in the tanks without power for 6-24 hours. Very easy to install and the adjustable temperature gauge is pretty accurate. The temperature difference was very minor. Seems to keep the temp n the tank fairly regular.

Overall Score
4.4

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

2. LLY Aquarium Heater Protector Detachable Heating Rod Sleeve with Suction Cups for Aquarium Fish Tank...

LLY Pet Accessories First Impressions

"6 currently."

Per my thermometers, they are all staying constant. This this is amazing and is worth the money. This heater warmed it right up and now my Betta and guppies are more active. Am a totally sold customer and would recommend them to anybody! It's pretty noticeable, but I don't really care. I will be ordering more of these in the future. I would definitely recommend this product.

  • LLY Aquarium Heater Protector Detachable Heating Rod Sleeve with Suction Cups for Aquarium Fish Tank
  • Made of high-quality materials, effectively cuts off the heat of the heater.
  • Thanks to the suction cup design, all you need to do is place it on the heating rod, attach several protective sleeves, and then suck it into the aquarium wall.
  • Protect heaters and aquarium fish, turtles, frogs, etc., protect heaters from accidental rupture, and protect fish from burns and damage.
  • High temperatures can cause scary fish to approach or pass by. The heater package protects them and makes them more comfortable in life.
  • The protective sleeve has a proper gap design to protect the fish while maintaining the effective transfer of heat generated by the heater.
  • Manufacture: LLY
  • Item Weight: 4.23 Ounces
  • Editor's Impressions Of The LLY Pet Accessories
  • Heat Quality [star rating='5']
  • Quality [star rating='5']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.3']

LLY Pet Accessories Final Thoughts

"Just bought a second one!"

I hope these suction cups work very well. The temperature has been holding all day, even in a colder room. For Discus you need warm and accurate heater and this seems to do the trick. The bonus digital thermometer it came with has been super helpful, and is accurate. Very easy to install and the adjustable temperature gauge is pretty accurate. The controller is easy to use, very accurate and reliable. I got this heater for my 55 gallon aquarium.

Overall Score
5.0

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

3. 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)

4. 300W Aquarium Heater Fish Tank Submersible Heater Turtle Heat Rod with Temperature Display External ...

User Ratings: 57 18

JackSuper First Impressions

"Yes, you read that right."

Keeps the water consistent and it's easy to adjust! I have had to turn the dial to about 78-79 for the tank to stay around 76 degrees. I like to keep it at 72 and from my thermometer it is reading at exactly 72. There is no protection from it banging on the glass tank. You don't have to worry about wide temperature swings with this unit. We received the chiller promptly and put it into use. This is only day one though, so I shall keep an eye one it.

  • 300W Aquarium Heater Fish Tank Submersible Heater Turtle Heat Rod with Temperature Display External Temperature Controller for Betta Frogs Newts Turtles
  • ★【Application】Applicable for freshwater and marine aquariums, Betta, Frogs, Newts, Turtles, aquaculture, glass containers, and hydroponic systems
  • ★【Intelligent temperature control】:Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically shut off(LED Off), when it is lower than the target temperature, heater will automatically start heating(LED on).
  • ★【Warm tips】This heater is fully submersible, constructed of shatter-resistant quartz glass and features an automatic safety shut-off to avoid overheating.
  • ★300W submersible heating rods are suitable for up to 99 gallons fish tanks, Cable:80cm/31.5 inch Temperature range:68°F-93°F(20°C-34°C),suitable for salt water and freshwater fish tanks.
  • 【EASY INSTALLATION】Make sure thermometer is completely submerged underwater for minutes, temp controller is adjustable from 59 to 95°F , just press set button to the set temperature, it begins to work.Please place the heating rod in the water outlet and completely immerse it in the water. 【Easy to use】you can adjust the temperature knob to set the temperature what you want easily,2mm thickened quartz glass,can be used in fresh water and salt water aquariums
  • Manufacture: JackSupermall
  • Editor's Impressions Of The JackSuper
  • Heat Quality [star rating='4.6']
  • Quality [star rating='4.2']
  • Value For Money [star rating='4.1']
  • Affordability [star rating='4.7']

JackSuper Final Thoughts

"Excellent build quality."

I appreciate the exterior temp readout and control module. I left seller feedback yesterday but have yet to hear from the seller. This product came in the nick of time! Once I opened the box i noticed the quality of the construction. I have a 10gallon tank that was at 72 degrees. I will be ordering more of these in the future. Once I opened the box i noticed the quality of the construction.

Overall Score
3.9

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

5. hygger 200W Digital Quartz Aquarium Heater for Fresh-Water Salt-Water, with External Led Display The...

User Ratings: 79 13

hygger First Impressions

"The seller was wonderful."

This does a great job at regulating the temp in my 10 gallon. There is no protection from it banging on the glass tank. Pressing and holding the button for 5 seconds changes it from F to C readouts. Temperature is slightly off by running a little warmer. I'm not a big fan of the big glass tubes. I wouldn't buy any other heater, unless one of these stops working. My marina heater takes a few hours.

  • hygger 200W Digital Quartz Aquarium Heater for Fresh-Water Salt-Water, with External Led Display Thermostat Controller and Thermometer, Auto Submersible Heater for Fish Tank 15-30 Gallon
  • 【Fast Heating Up】voltage 110-120V/60HZ, power 200W, US three-pin plug, heater rod length 6.3 inch, 200W submersible heater for fish tank 15-30 Gallon. The heater power cord is 6ft, the controller power cord is 5ft, the thermometer cord is 4.6ft. Temp range: 61-90℉. Fast heating up aquarium heater, it takes about 3 minutes to heat 3.5 gallon water up 3℉
  • 【Fully Automatic Control】very easy and reliable to use. After finishing the temperature setting, the fish tank heater will run automatically by itself. It will stop heating when the water temp reaches to the set temp, please note that the water temp may go up 1℉ more because of the waste heat. When the water temp is cool down to 1℉ less than the set temp, the tank heater will restart heating
  • 【Must be Fully submerged】with strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged. The thermometer should be away from the heater and keep water circulation as far as possible. We provide 1 year warranty for this heater, if get any issues, just contact the seller directly
  • 【Digital LED Display Controller】the external IC temp controller can show the water temp with 2 blue LED digits. Only show Fahrenheit degrees. To set the temp, just press the button over and over until the screen displaying the temp you desired, then stop and wait the digit flashing for 3 times, the setting is done and the led shows the current water temp again. The controller is connect with separate sensitive thermometer
  • 【Quartz Tube & Plastic Guard】With high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, service life can be 3 years or more. With low profile black plastic guard, easy to hide in the tank. The guard can prevent your aquarium pets from burned, the gaps on the guard is about 3mm, no worries for fish stuck. The plastic guard mustn't be exposed to air when the heater is heating
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality [star rating='4.6']
  • Quality [star rating='3.5']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='4.1']

hygger Final Thoughts

"No copper lines!"

I will definitely be buying another one for my other tanks at bigger one. The red light means it's off, blue light means the temperature is constant. The suction cups are large, high quality and seem to stick great. The line is there due to regulations in certain countries. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. --The cylinder or rod diameter is bigger. I used to try those other cheap heaters sold on amazon.

Overall Score
4.4

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

6. Inkbird Aquarium Heater with Probe Thermostat Fish Ornamental Shrimp Reef Tanks 24 Hours Double Time...

User Ratings: 75 6

Inkbird First Impressions

"I like this heater."

The temperatures are pretty accurate. The suction cups are large, high quality and seem to stick great. This is only day one though, so I shall keep an eye one it. It would stick out of my 30 g wide tank if I were to put it vertical. I got this heater for my 55 gallon aquarium. Well I bought a second one took me only one trying to get the right temperature. The cover over the heating tubes is great, the turtles claws can't damage the tube.

  • Inkbird Aquarium Heater with Probe Thermostat Fish Ornamental Shrimp Reef Tanks 24 Hours Double Time with Day Night Automatic Temperature Controller
  • 【Two Heating Plug】 Temperature control mode: on / off control. Please note that it is just a heating controller with no cooling function. Both plugs can control heating. The probe comes with a suction tray, which can be easily installed on the water tank.
  • 【Applicable scene】Because it has the powerful function of corrosion protection, it is very suitable for fresh water, sea water aquarium, coral cylinder, ornamental shrimp and tropical fish.
  • 【Dual Time Cycle Setting】Different daytime and night temperatures can be set within 24 hours depending on the physical needs of animals and plants.
  • 【LED display screen】Plug-and-play products are designed with a dual liquid crystal display that provides a temperature display of Celsius or Fahrenheit, capable of displaying.
  • 【Different function】Temperature calibration, over-temperature sensor fault alarm(over-temperature and sensor fault alarm). Maximum output load: 1100 W (110 V).
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Heat Quality [star rating='3.8']
  • Quality [star rating='3.6']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

Inkbird Final Thoughts

"Peace out."

I would definitely recommend this product. The temperatures are pretty accurate. If the blue light is flashing it means the heater is not fully submersible. Sometimes it gets outside of it's ability to cool but only within a few degrees. I got the 200W variant for my 54 gallon corner tank that's housing goldfish. I dont know, and havent tried just yet. It does blend well in some setups and may look bulky in others.

Overall Score
4.5

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

7. hygger Submersible Aquarium Heater,100W /300W Adjustable Fish Tank Heater with External Temp Control...

User Ratings: 73 9

hygger First Impressions

"5 gallons."

I have it set to 81F to get a 77F water temp. I dont know, and havent tried just yet. Easy enough to let it run all the time. The temperature gauge is fairly accurate in my 55 gallon tank. It took about an hour to reach 80f, which is fairly quick. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. It's only been set up for a month we'll see how well it does in a few months.

  • hygger Submersible Aquarium Heater,100W /300W Adjustable Fish Tank Heater with External Temp Controller Auto Thermostat Heater for 10-60 Gallon Saltwater and Freshwater Tank
  • 300W AQUARIUM HEATER: For 30 to 60 gallon fish tanks, with a precision probe inside, it is possible to monitor heat more efficiently and avoid "cooking fish", and it can be fixed on the inner glass of the aquarium with suction cup without disturbing the fish.
  • TEMPERATURE ADJUSTMENT: Set the temperature on the adjustment wheel outside the aquarium. The adjustment knob of submersible aquarium heater can select the temperature between 75°F and 91°F , Temp Control Accuracy:±2℉,Temp Accuracy:±1℉, without worrying about hand wetness.
  • FULLY AUTOMATIC CONTROL: When the water temperature is higher than the set temperature value, the fish tank heater will automatically stop; if the water temperature is lower than the set temperature, the heater will automatically start heating (error is 1.5-2°F).
  • OVERHEAT PROTECTION: When the water temperature is over 97°F, the aquarium heater will auto shut down. If a fault occurs, the backup circuit in the controller will work to shut it down. It provides a warm and sustainable environment while keeping a safe life for fish.
  • RELIABLE QUALITY: Use milky quartz material, can resist a high temp of 1800 fahrenheit degree, excellent in explosion-proof and shatter-resistant, to prevent burns on your pet. Fish tank water Heater is suitable for saltwater and freshwater, fast heating, corrosion resistance and oxidation resistance.
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality [star rating='3.8']
  • Quality [star rating='5']
  • Value For Money [star rating='4.8']
  • Affordability [star rating='3.9']

hygger Final Thoughts

"Very pleased so far."

There is no protection from it banging on the glass tank. There is a misconception on the internet that the heater isn't fully submersible. --The cylinder or rod diameter is bigger. They shipped us the upgraded version that also heats! All seem to vary between 1-2 degrees of each other which doesn't concern me much. I like to keep it at 72 and from my thermometer it is reading at exactly 72. There is no protection from it banging on the glass tank.

Overall Score
4.3

[star rating="4.3"]
(135 Points)

8. BOEESPAT Aquarium Heater 300W,Fish Tank Heater with Anti Scald Protector and Adjustable Thermostat S...

User Ratings: 51 24

BOEESPAT First Impressions

"FIVE STARS!"

I have it set to 81F to get a 77F water temp. The temperature gauge is fairly accurate in my 55 gallon tank. I contacted the manufacturer and they sent me a new unit in less than a week! If the blue light is flashing it means the heater is not fully submersible. There is a misconception on the internet that the heater isn't fully submersible. I'm not a big fan of the big glass tubes. The temperature gauge is fairly accurate in my 55 gallon tank.

  • BOEESPAT Aquarium Heater 300W,Fish Tank Heater with Anti Scald Protector and Adjustable Thermostat Suitable for Saltwater and Freshwater,One Extra Free Thermometer(40 to 60 gallons)
  • 300W aquarium heater is suitable for 40 to 60 gallons can be used in fresh water and salt water aquariums,easy to hide in the tank
  • Adjustable aquarium heater from 68°F to 93°F. A good temperature range for most fishes is 76°F to 80°F . An additional stick-on thermometer as a bonus to detect water temp at any time
  • Fish Tank Heater Explosion Proof,2mm thickened quartz glass Length - 14.5 inch,voltage 110-120V, power cord is 37.4ft
  • Made of high quality quartz glass, Waterproof double seal material , black protective container, shatter-resistant construction, ensures safe operation and keep your fishes from scalding and punching Heater
  • After set the temp you want, automatic switch device and temperature detection system, water heater will turn off automatically when its temp reaches your pre-set, also will turn on when lower than your set, relieved and simple operation
  • Manufacture: BOEESPAT
  • Batteries: 1 LR44 batteries required. (included)
  • Editor's Impressions Of The BOEESPAT
  • Heat Quality [star rating='3.2']
  • Quality [star rating='4.4']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='3.5']

BOEESPAT Final Thoughts

"Best value."

If the water runs low or air gets in the heater shuts off. Am a totally sold customer and would recommend them to anybody! I adjusted the set temperature a little lower to be more in the range I wanted. Those turned out to be a hit and miss. At this time I highly recommend this product. I have a 10gallon tank that was at 72 degrees. The temperature difference was very minor.

Overall Score
3.6

[star rating="3.6"]
(100 Points)

9. 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)

10. Inkbird 1200 Watts Digital Temperature Controller Aquarium Thermostat for Aquarium Heater, with Wate...

User Ratings: 73 6

Inkbird First Impressions

"I like it."

Also were nice along the whole process. Those turned out to be a hit and miss. This is only day one though, so I shall keep an eye one it. Keeps the water consistent and it's easy to adjust! I like how the heater is constructed. I emailed the email it says to and told them. I love the heater otherwise, but I'm afraid some water has gotten inside the heater.

  • Inkbird 1200 Watts Digital Temperature Controller Aquarium Thermostat for Aquarium Heater, with Waterproof Sensor
  • Wifi & Free APP : Pair the aquarium temperature controller with your phone via 2.4GHz Wi-Fi, the device will alarm if there are exceptions. And all exceptions will be updated to the APP, the app will push notifications to remind you.(APP: ☞InkbirdSmart)
  • Dual Protection : The wifi temperature controller is equipped with 2 relays(current relay) to ensure that the power can be turned off under any abnormal circumstances, will protect your fish from being hurt by overheated water
  • Continous Heating Alarm The heating time can be set according to your needs from 1 hour to 72 hours. The controller will alarm once the water can not be heated to the setting temperature within the specified time. The temperature setting range is 20.0℃~35.0℃/68.0℉~95.0℉ and the measure temperature range is -40℃~100℃/-40℉~212℉.
  • Easy to use : Plug and Play. The 10A 1200w programmable and prewired aquarium thermostat is compatible with most kinds of heaters, no need to assemble the product yourself, just plug and play.
  • Dual probe for safety :The aquarium heater controller will alarm once the temperature difference between 2 probes is more than 5℉(3℃), and the app will push a notification at the same time.To protect your fish in a more safet environment
  • Manufacture: Inkbird
  • Editor's Impressions Of The Inkbird
  • Heat Quality [star rating='3.5']
  • Quality [star rating='3.8']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='4.2']

Inkbird Final Thoughts

"So far so good!"

But I am single and don't have to worry about this. The temperatures are pretty accurate. The red light means it's off, blue light means the temperature is constant. 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. This has been in my fish tank for a few months now and it's been absolutely perfect! I use a 50 for a 5 gal and a 10 gal tank.

Overall Score
4.4

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

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