Editor's Choice - Our Favorite boxtech Aquarium Heaters

1. boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2...

User Ratings: 69 8

boxtech First Impressions

"Best addition to my tank."

There is no protection from it banging on the glass tank. Sometimes you may have to tinker around with the dial. I got this heater for my 55 gallon aquarium. Awesome chiller, perfect for Hydroponics. The heater is easy; turn the dial to set temp and plug in. 210 gallon ones and one 90 gallon bow front tank. I got the 200W variant for my 54 gallon corner tank that's housing goldfish.

  • boxtech Aquarium Heater, 50W/100W/300W Explosion Proof Submersible Thermostat with Adjust Knob and 2 Suction Cups Suit Marine Saltwater and Freshwater
  • Fish Tank Heater: 300W aquarium heaters suit for 30 - 80 Gallon fish tank. Voltage:110V, power cord is 5.57ft, Max deep water immersion 20 inch/1.7 FT
  • Correct installation: Stick the heater vertical onto the tank side near the water intake or on the way of water flow.(This way the heater can quickly sense the water temperature and make adjustments automatically), Keep the aquarium heater fully submerged in water
  • Fully Automatic Control: Design with External Temperature Controller, Temperature Range is 68 ºF-90 ºF, when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating
  • Quartz Tube Safety Protection: Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevents electricity leakage, service life can be 3 years or more
  • Notice Please: Before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater and regularly clean the scale on the heater
  • Temperature Control: Design with External Temperature Controller, Temperature Range is 68ºF-90ºF, when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating.
  • Voltage:110 V Frequency: 50HZ
  • Led Indicator Light:When it working, the indicator light is red.
  • Manufacture: BOXTECH
  • Product Dimensions: 13.39 x 1.97 x 3.54 inches; 11.99 Ounces
  • Editor's Impressions Of The boxtech
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

boxtech Final Thoughts

"There was only~0."

You don't have to worry about wide temperature swings with this unit. I was amazed how quickly I got to my temperature I need it 78 degrees. This has been in my fish tank for a few months now and it's been absolutely perfect! You don't have to worry about wide temperature swings with this unit. It is a bonus that the heater is titanium. I have it set to 81F to get a 77F water temp. My fish likes to get close to it and he has never been hurt by it.

Overall Score
4.3


(523 Points)

2. 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
  • Quality
  • Value For Money
  • Affordability

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


(288 Points)

3. Ehm Heater Jager 300w

User Ratings: 72 7

Eheim First Impressions

"Works fine."

But I am single and don't have to worry about this. I noticed my old hygger heater beginning to fail and my wife ordered this one. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Well I bought a second one took me only one trying to get the right temperature. So if you set it to 78 degrees, the heater will not kick on until it reads 76. No biggie, but annoying nonetheless. I went ahead and went with the the larger 300W for my 45 gallon.

  • Ehm Heater Jager 300w
  • Jager Trutemp Aquarium Heater 20" 300 Wt
  • Manufacture: EHEIM
  • Editor's Impressions Of The Eheim
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim Final Thoughts

"Quality was amazing."

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. We would consider a replacement and then we would return the defective unit. The temperature has been holding all day, even in a colder room. It is a bonus that the heater is titanium. It just cycles through to 93f and starts over. Seems to keep the temp n the tank fairly regular.

Overall Score
4.4


(53 Points)

4. Uniclife Aquarium Heater Submersible with Thermometer, 100 Watt for 20 Gallon Fish Tank

User Ratings: 67 5

Uniclife First Impressions

"Just bought a second one!"

I went ahead and went with the the larger 300W for my 45 gallon. I noticed my old hygger heater beginning to fail and my wife ordered this one. I use a 50 for a 5 gal and a 10 gal tank. I think it works well to not stand out like other heaters. Checked the accuracy of the heater with an infrared thermometer. Sometimes you may have to tinker around with the dial. I used to try those other cheap heaters sold on amazon.

  • Uniclife Aquarium Heater Submersible with Thermometer, 100 Watt for 20 Gallon Fish Tank
  • Ideal for 10-25 gallons 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 turn 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 9.7" x 1" (L x D)
  • Come with Uniclife aquarium heater x 1; Suction Cups x 3; stick-on thermometer x 1(The 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
  • Quality
  • Value For Money
  • Affordability

Uniclife Final Thoughts

"I like this heater."

The red light means it's off, blue light means the temperature is constant. I have only had minor problems with the suction cups. It comes with a hanging kit and can be secured on the edge of the tank. The heater is being used in a 40 gallon breeder. No biggie, but annoying nonetheless. Once attached to the tank wall I've had no issues with it coming off. The heater is super thin and the reflective surface is interesting.

Overall Score
4.3


(25 Points)

5. PGFUNNY 25W Aquarium Heater, Fish Tank Heater for Betta Smart Thermostat, Slim Design Fit 3 to 5 Gal...

User Ratings: 69 7

PGFUNNY First Impressions

"Just bought a second one!"

This heater warmed it right up and now my Betta and guppies are more active. My heater is fully submerged underwater and works perfectly fine. Temperature is slightly off by running a little warmer. There is no protection from it banging on the glass tank. Well worth the money the first one I bought still works great. The temperature lights up so it's very easy to read. I have a 10gallon tank that was at 72 degrees.

  • PGFUNNY 25W Aquarium Heater, Fish Tank Heater for Betta Smart Thermostat, Slim Design Fit 3 to 5 Gallon Tank, with Thermometer Strips
  • 【Fully Automatic Temperature Control Chip】: Submersible Aquarium heater works in intermittent operation mode,temperature regulate between on 77℉ - 82℉, Unlike the traditional manually adjusted fish tank heaters, no need to set. and will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient.
  • 【Suitable for 3-5 Gallon Tank】: Fish Tank Heater 25 watt powerful and slim design fit for small fish tank. The Way of Measure Watt Heater for Your Fish Tank Needing: Watt=(Tank's Length*Wide*Water Height) /1000*2.
  • 【Advanced Materials】: sturdy engineering plastic. It has anti-explosion, anti-scalding function, high temperature resistance and high safety. Suitable for aquarium pets such as turtles and fry. Length - 5.35 inch, Width - 0.9inch, Thickness - 0.63inch.
  • 【Come with Thermometer Strips】: By using this Thermometer Strips, you will be able to monitor. An easy to identify blue color shows the current temperature of your aquarium water. Temperature Strips is for reference only. Note: The temperature strips should stick on the outside of fish box and level with the heater. due to the different materials of glass , the shown temperature may be delayed.
  • 【Quality Assurance】: This product fish tank heater have certificated by CE, ROHS, FCC certifications. Anti-explosion, Waterproof, Scald-preventing, safe operation for pet betta fish.Working power 25w, frequency: 50/60Hz, voltage: 110-120V, waterproof rating IP68.
  • Manufacture: ZENGH
  • Editor's Impressions Of The PGFUNNY
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

PGFUNNY Final Thoughts

"Works great."

This does a great job at regulating the temp in my 10 gallon. Well I bought a second one took me only one trying to get the right temperature. The heater is being used in a 40 gallon breeder. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. I'm in the process of setting up for tanks. Well I bought a second one took me only one trying to get the right temperature. We would consider a replacement and then we would return the defective unit.

Overall Score
4.3


(724 Points)

6. Eheim Thermocontrol e300 Heater

User Ratings: 89

Eheim AEH3639090 First Impressions

"Until the next time."

Once I opened the box i noticed the quality of the construction. I got this heater for my 55 gallon aquarium. Very easy to install and the adjustable temperature gauge is pretty accurate. You don't have to worry about wide temperature swings with this unit. Awesome chiller, perfect for Hydroponics. 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.

  • Eheim Thermocontrol e300 Heater
  • Advantages of the EHEIM control heater thermocontrol-e Precise temperature adjustment from 68°F to 89°F (20 to 32°C) No readjustment necessary Control accuracy 0. 5 °C The heat is kept constant Control lamp indicates the heating function (red: heating up; green: temperature reached) Fully submersible (waterproof) With dry-running protection (Thermo Safety Control) Glass coating increases the heating surface and ensures optimum, even heat output Including double suction holder Many sizes for aquariums from 5 to 300 gallons Suitable for fresh and marine water Highest safety and reliability Made in Germany Specifications Wattage: 300W Temperature setting range: 68°F to 89°F (20 to 32°C) Aquarium Size (approx. ) 159-265 Gallons Height: 19. 5" Power Cord Length: 5. 5'
  • Item Package Height: 1.97
  • Item Package Length: 2.56
  • Item Package Width: 23.03
  • Manufacture: Eheim
  • Editor's Impressions Of The Eheim AEH3639090
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Eheim AEH3639090 Final Thoughts

"5 gallon tank."

210 gallon ones and one 90 gallon bow front tank. Takes a little while to drop the temps if it is hot in the garage. It took me only two tries to get it to the correct temperature. If the water runs low or air gets in the heater shuts off. We would consider a replacement and then we would return the defective unit. I like to keep it at 72 and from my thermometer it is reading at exactly 72. It is a bonus that the heater is titanium.

Overall Score
4.8


(11 Points)

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

Aqua Euro USA AC10A First Impressions

"I do recommend."

And kids love pushing all sorts of buttons. If the blue light is flashing it means the heater is not fully submersible. Come on Fluval, expect better from you. It is safe and dependable and comes with a one year warranty. Also I like how it shows both the current temperature and the set temperature. I will definitely be buying another one for my other tanks at bigger one. This this is amazing and is worth the money.

  • 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
  • Quality
  • Value For Money
  • Affordability

Aqua Euro USA AC10A Final Thoughts

"Not very reasonable."

I like the fact that it comes with a digital thermometer. 210 gallon ones and one 90 gallon bow front tank. 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. The temperature lights up so it's very easy to read. Maintains it well except when the weather is already warm then it over heats it. The bonus digital thermometer it came with has been super helpful, and is accurate.

Overall Score
3.7


(2 Points)

8. Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W P...

User Ratings: 71 9

Inkbird 8541956716 First Impressions

"16-26 gallons 75 watt 10."

Keeps the temperature within 1 degree of what you set it to at all times. It's pretty noticeable, but I don't really care. I bought a similar one at the pet store and it barely worked. This is a great heater that is very easy to set up and program. And kids love pushing all sorts of buttons. 210 gallon ones and one 90 gallon bow front tank. Checked the accuracy of the heater with an infrared thermometer.

  • Inkbird Temperature Controller ITC308 Reptile Freezer Thermostat Aquarium Heater Cooler 110V 1100W Pre Wired Dual Stage Digital Outlet Probe Heating Cooling Plug Homebrewing Refrigerator Greenhouse
  • Pre-wired controller ITC-308 is served as the successor to the STC-1000. If you don't want to build your own STC-1000, the Inkbird ITC-308 is the solution!
  • Setup is easy, straightforward and quick.
  • The cord on the remote temperature sensor is a bit over 6 feet long.
  • Accurate displays, thermostatic function and temperature calibration.
  • It's an all in one, simple solution providing control of cooling and heating.
  • Item Weight: 14.4 ounces
  • Editor's Impressions Of The Inkbird 8541956716
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Inkbird 8541956716 Final Thoughts

"Pricing was good."

This has the best controller that I have found on the market. The temperature lights up so it's very easy to read. I have a 10gallon tank that was at 72 degrees. I have a few of these and I use them in my 55 gallons tanks and a 29 gallon tank. Checked the accuracy of the heater with an infrared thermometer. Now, both points are clear on the package instructions. This little heater is perfect; this is our third purchase of the same heater.

Overall Score
4.3


(132 Points)

9. 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
  • Quality
  • Value For Money
  • Affordability

BinChang Final Thoughts

"I have a betta in a 1."

Keeps the temperature within 1 degree of what you set it to at all times. The cover over the heating tubes is great, the turtles claws can't damage the tube. I will be ordering more of these in the future. I will be ordering more of these in the future. Now, both points are clear on the package instructions. Two inches above that is a waterline for maximum. Checked the accuracy of the heater with an infrared thermometer.

Overall Score
4.3


(36 Points)

10. PASTE 300W 500W Aquarium Heater Submersible, 50-90 Gallon Fish Tank Heater with Durable Quartz Glass...

User Ratings: 68 11

PASTE First Impressions

"Same suckers for years!"

Personally for me the housing doesn't bother me. And I get to keep the first one I bought! The temperatures are pretty accurate. It is safe and dependable and comes with a one year warranty. It would stick out of my 30 g wide tank if I were to put it vertical. This does a great job at regulating the temp in my 10 gallon. When i installed them, i let them sit in the tanks without power for 6-24 hours.

  • PASTE 300W 500W Aquarium Heater Submersible, 50-90 Gallon Fish Tank Heater with Durable Quartz Glass and Protective Sleeve 3 Suckers Auto Thermostat for Fresh-Water and Salt-Water…
  • [SAFE AND DURABLE]: High quality Quartz Glass has Explosion-proof Shatterproof Shield-proof Design than conventional glass. Extra protective Sleeve updated for Anti-melting anti punching prevents electricity leakage, multiple sealed material. Provide the safety of living environment for your aquatic creatures
  • [USED WIDELY]: This 300W Fish Tank Heater is suitable for aquariums from 50 to 80 gallons (150-250 liters), is great for both Fresh Water and Marine Water aquariums, and you can choose the appropriate temperature for your fish, turtle, and plants.(The suitable temperature range for most tropical fish is 76°F to 80°F/24°C -27°C )
  • [ACCURATE THERMAL CONTROL]: Set and adjust the desired temperature with the use of the Temperature Controller on the top. The adjusting range is between 68°F~94°F (20°C~34.5°C),which allows for complete control of aquatic climate within a 2-degree difference. The small dot between each 2 numbers means 2 degree. At the same time has the automatic constant temperature function, builds the overheat and the water shortage protection mechanism
  • [INSTALLATION EASILY]: The 300 watt heater aquarium comes with 3 powerful suction cups to help you easily mount the heating rod vertically or horizontally in the tank, preferably horizontally near the water inlet and outlet to ensure that the tank is warm in all corners.
  • [SATISFACTION GUARANTEED]: Our fish tank heater 300 watt 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, our customer service staff will respond within 12 hours and provide professional after-sales service. We hope to hear your advise the first time. Please be sure to leave a comment for us after you purchase. Thank you for your choice.
  • Manufacture: PASTE
  • Product Dimensions: 16.5 x 1.4 x 1.4 inches; 14.67 Ounces
  • Editor's Impressions Of The PASTE
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

PASTE Final Thoughts

"Buy with confidence!"

Two inches above that is a waterline for maximum. It comes with a hanging kit and can be secured on the edge of the tank. Sometimes it gets outside of it's ability to cool but only within a few degrees. This has the best controller that I have found on the market. I was worried about the quality but I am thoroughly impressed with this heater! I have it set to 81F to get a 77F water temp. This product came in the nick of time!

Overall Score
4.3


(67 Points)

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