Editor's Choice - Our Favorite Inline Aquarium Heaters

1. Hygger Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Bet...

User Ratings: 70 6

hygger First Impressions

"Great heater."

Keeps the water consistent and it's easy to adjust! The controller is easy to use, very accurate and reliable. I like the fact that it comes with a digital thermometer. I use this little heater for my 10 gallon quarantine tank. And kids love pushing all sorts of buttons. So far I like it setup was super easy. I have a 10gallon tank that was at 72 degrees.

  • Hygger Mini Inline Quartz Glass Aquarium Heater with External Controller, Adjustable Submersible Betta Fish Tank Thermostat 50W/100W
  • 【For Fish Tank 5-15 gallon】50W aquarium heater, voltage AC110-120V 60HZ, power cord is 4.6ft. Heater rod length is 5 inch, mini compact heater for small fish tank use. Perfect for betta tank. A very compact heater, easy to hide in the tank
  • 【Automatic Stop & Restart】Effectively maintain the tank water in the constant temp you set, stop heating when water temp reaches to the set temp and restart heating when the water temp is 1-2℉ below the set temp.The indicator light on the controller will be on red when it's heating, will be off when it stop heating
  • 【With Built-in Thermometer】you can set the the temp from 68℉ to 90℉,temp exactness is within 2 degrees in fahrenheit. There is a built-in thermometer in the heater to detect the water temp, not need to buy seperate thermometer
  • 【Durable Quartz Glass】this aquarium heater tube is heat-resistant quartz glass made, excellent in explosion-proof, can be used in fresh water and salt water aquariums, white alundum sand as the heat-conducting media, service life can be 3 years or more
  • 【Fully Submersible】this fish tank heater is waterproof, must be fully submerged in water when working, place it horizontally or vertically near the water intake or where the way of water flow
  • Manufacture: hygger
  • Editor's Impressions Of The hygger
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

hygger Final Thoughts

"Buy with confidence!"

Those turned out to be a hit and miss. When i installed them, i let them sit in the tanks without power for 6-24 hours. --The heater itself is a bit shorter if your tank is a short one. I bought a similar one at the pet store and it barely worked. But my guys don't read them and don't listen! I am very happy with this purchase. So when I first received it it didn't work and I was very disappointed.

Overall Score
4.4


(475 Points)

2. Aqueon Submersible Heater

User Ratings: 67 11

Aqueon 100106102 First Impressions

"What a long."

Easy enough to let it run all the time. Also I like how it shows both the current temperature and the set temperature. Once I opened the box i noticed the quality of the construction. The controller is easy to use, very accurate and reliable. They promptly fixed the issue without any delays or drama. I will definitely be buying another one for my other tanks at bigger one. Those turned out to be a hit and miss.

  • Aqueon Submersible Heater
  • Precise temperature setting to 1-degree F (68-88 degrees F)
  • Recommended for aquariums up to 100-Gallons
  • Shatter-resistant construction, fully submersible
  • LED light turns on when aquarium water is being heated; Automatic safety shut off and overheat protection
  • Lifetime Limited Warranty
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 3.7 x 15 x 1.5 inches; 8.96 Ounces
  • Editor's Impressions Of The Aqueon 100106102
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Aqueon 100106102 Final Thoughts

"Will update in a month."

So if you set it to 78 degrees, the heater will not kick on until it reads 76. It would stick out of my 30 g wide tank if I were to put it vertical. This is a great heater that is very easy to set up and program. I am very happy with this purchase. This is only day one though, so I shall keep an eye one it. Easy to read the temp and know exactly how warm the water is. I like to keep it at 72 and from my thermometer it is reading at exactly 72.

Overall Score
4.2


(1157 Points)

3. Tetra 26445 Fauna Aquatic Reptile Heater For Frogs, Newts & Turtles,100 Watt,green

User Ratings: 67 10

Tetra 26445 First Impressions

"5 gallons."

Once attached to the tank wall I've had no issues with it coming off. For Discus you need warm and accurate heater and this seems to do the trick. It comes with a hanging kit and can be secured on the edge of the tank. And I get to keep the first one I bought! I recieved this product without the instructions or the added thermometer. Keeps the water consistent and it's easy to adjust! The setting always stayed the same.

  • Tetra 26445 Fauna Aquatic Reptile Heater For Frogs, Newts & Turtles,100 Watt,green
  • Protective plastic cage to prevent breakage
  • Automatic thermostat maintains water temperature at 78 Fahrenheit.
  • Plastic cage has openings so that the 8-foot cord can adapt to any direction
  • Two oversized suction cups provide maximum hold to prevent movement by active reptiles. Appropriate for heating up to 30 gallons of water
  • Note:Refer user manual below for proper installation and specification.
  • Protective plastic cage to prevent breakage
  • Automatic thermostat maintains water temperature at 78°F
  • Plastic cage has openings so that the 8-foot cord can adapt to any direction
  • Manufacture: Tetra
  • Product Dimensions: 3.5 x 2.25 x 9.27 inches; 1.6 Ounces
  • Editor's Impressions Of The Tetra 26445
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Tetra 26445 Final Thoughts

"It easy to set."

Seems to keep the temp n the tank fairly regular. Maintains it well except when the weather is already warm then it over heats it. Also I like how it shows both the current temperature and the set temperature. I contacted the manufacturer and they sent me a new unit in less than a week! The temperatures are pretty accurate. Am a totally sold customer and would recommend them to anybody! I think it works well to not stand out like other heaters.

Overall Score
4.2


(2210 Points)

4. Yescom 400W Submersible Adjustable Thermostat Aquarium Heater Titanium Fish Tank Heater 80 Gallon Sa...

User Ratings: 34

Yescom First Impressions

"Same suckers for years!"

--The heater itself is a bit shorter if your tank is a short one. Easy enough to let it run all the time. I emailed the email it says to and told them. When i installed them, i let them sit in the tanks without power for 6-24 hours. I have 3 of the Fluval heaters, in various sizes. They shipped us the upgraded version that also heats! The suction cups are large, high quality and seem to stick great.

  • Yescom 400W Submersible Adjustable Thermostat Aquarium Heater Titanium Fish Tank Heater 80 Gallon Salt Fresh Water
  • Aquarium Heater: 400w fish tank heater fits 3 1/4 to 3 11/12 ft fish tank and is ideal for fresh water & salty water aquariums, is suitable for 70-80 gallon
  • LCD Digital Display: Easy to observe the water temperature and the external controller is safe to adjust temperature
  • More durable: Made of Titanium Alloy, IPX8 water-proof, explosion-proof, corrosion-proof, scald-preventing
  • Power-off Protection: When sensing probe is exposed in the air or the water temperature is above 94°F, the heater will stop heating to effectively prevent dry burning
  • Buy with confidence: CE, FCC, ROHS certificated for safe protection
  • Manufacture: Yescom
  • Product Dimensions: 12.6 x 1.2 x 1.2 inches; 13.93 Ounces
  • Editor's Impressions Of The Yescom
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Yescom Final Thoughts

"5 or even."

If the blue light is flashing it means the heater is not fully submersible. Well worth the money the first one I bought still works great. I use a 50 for a 5 gal and a 10 gal tank. I dont know, and havent tried just yet. I appreciate the exterior temp readout and control module. I tested it by unplugging and replugging it. I contacted the manufacturer and they sent me a new unit in less than a week!

Overall Score
4.0


(3 Points)

5. POPETPOP [Upgraded 400W Aquarium Heater - Submersible Titanium Fish Tank Heaters with Intelligent LE...

User Ratings: 70 10

POPETPOP D18MP18Q1I4V9ISBXYOU58NNE First Impressions

"Looks as advertised."

It is a bonus that the heater is titanium. All seem to vary between 1-2 degrees of each other which doesn't concern me much. This has the best controller that I have found on the market. Sometimes it gets outside of it's ability to cool but only within a few degrees. The suction cups are large, high quality and seem to stick great. But I am single and don't have to worry about this. Was very impressed with the quality of this heater.

  • POPETPOP [Upgraded 400W Aquarium Heater - Submersible Titanium Fish Tank Heaters with Intelligent LED Temperature Display
  • √ [UPGRADED] MORE PRECISE TEMPERATURE - Upgraded sensing probes on the top of heater provides more precise induction that reduces temperature error which allows you check the temperature of the aquarium more easily to prevent the difference temperature in water from making the fish sick.
  • √ [UPGRADED] DURABLE HEATING WIRE - The aquarium heater was changed from the original iron-chromium wire to the nickel-chromium wire to ensure the heater has longer life and precisely control heater temperature. It is extremely durable and stable, and faster heating than normal glass heaters.
  • √ SAFETY PROTECTION - The fish tank aquarium heater has CE, FCC and ROHS certification. When sensing probe is exposed in the air or detected the water is overheating, the heater will stop heating. Giving your aquarium fish, amphibians, turtles safety protection.
  • √ EASY TO ADJUST TEMPERATURE - LED digital display temperature that is easy to observe the temperature set by the heater. Using intelligent IC chip for more precise temperature control with less error (±1°C/±2℉). The touch button ensures that the hand is not wet when adjusting the temperature.
  • √ SIMPLE OPERATION - The 400w fish tank heater can be used in 70-80gal gallon fresh water and salt water aquariums. Easy to set temp from 20°C ~ 34°C(68℉~ 94℉). Note: Don't expose the heater out of water surface as this may cause damage to the heater.
  • Manufacture: POPETPOP
  • Item Weight: 11.5 ounces
  • Product Dimensions: 12.99 x 1.57 x 1.57 inches
  • Editor's Impressions Of The POPETPOP D18MP18Q1I4V9ISBXYOU58NNE
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

POPETPOP D18MP18Q1I4V9ISBXYOU58NNE Final Thoughts

"Bought the 300W one."

Am a totally sold customer and would recommend them to anybody! All seem to vary between 1-2 degrees of each other which doesn't concern me much. The temperature has been holding all day, even in a colder room. It took me only two tries to get it to the correct temperature. I have only had minor problems with the suction cups. --The heater itself is a bit shorter if your tank is a short one. Bought it as a chiller for the k40 CO2 laser.

Overall Score
4.3


(444 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
  • Quality
  • Value For Money
  • Affordability

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


(944 Points)

7. PERSUPER Submersible Aquarium Heater Adjustable LED Digital Temperature Display Fish Tank Heater for...

User Ratings: 62 12

PERSUPER First Impressions

"And I am glad I did."

I'm not a big fan of the big glass tubes. Am a totally sold customer and would recommend them to anybody! There is no protection from it banging on the glass tank. There is no protection from it banging on the glass tank. Keeps the temperature within 1 degree of what you set it to at all times. The temperature lights up so it's very easy to read. I had a thermometer on opposite side of tank and the heater was dead on true.

  • PERSUPER Submersible Aquarium Heater Adjustable LED Digital Temperature Display Fish Tank Heater for Turtle Betta Fish Water Heater with Protective Guard
  • 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, and it is easy to control the temperature between 68 ° f / 20 ° C and 94 ° f / 34 ° C; this heater provides the best living environment for your aquatic organisms.
  • Safety assurance: it adopts the highest waterproof grade IP68, titanium pipe material, 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.
  • Automatic constant temperature function: when the water temperature reaches the specified temperature, the heater will automatically stop heating, when the water temperature is lower than the set temperature, the heater 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

"I would buy again."

Thanks for the great customer service! --The cylinder or rod diameter is bigger. My marina heater takes a few hours. I'm in the process of setting up for tanks. Awesome chiller, perfect for Hydroponics. It's only been set up for a month we'll see how well it does in a few months. The heater is easy; turn the dial to set temp and plug in.

Overall Score
4.1


(190 Points)

8. Poafamx 5gal Aquarium Chiller 20L Fish Tank Water Cooling System Temperature Constant Quiet for Home...

User Ratings: 15 16

Poafamx First Impressions

"And I am glad I did."

And kids love pushing all sorts of buttons. The heater is super thin and the reflective surface is interesting. This has the best controller that I have found on the market. But my guys don't read them and don't listen! At this time I highly recommend this product. But I am single and don't have to worry about this. I will definitely be buying another one for my other tanks at bigger one.

  • Poafamx 5gal Aquarium Chiller 20L Fish Tank Water Cooling System Temperature Constant Quiet for Home Use Jellyfish Coral Aquaculture 110V with pump (20L Chiller)
  • [ADJUSTABLE CONSTANT WATER COOLER HEATER] The aquarium cooler has real-time monitoring of water temperature, automatic constant temperature
  • [LOW NOISE] Imported electronic components design, cooling/ heating without noise
  • [ENVIRONMENTAL PROTECTION] Using electronic refrigeration technology, environmental protection and no emissions
  • [SMALL AND CONVENIENT] Small size, light weight, easy to store and carry, easy to install and clean
  • [WIDE RANGE OF APPLICATION] Widely used in homes, aquariums, fish tanks, fish farms, and other fields. Also suitable for aquatic creature, aquaculture, fish, crystal shrimp, coral and jellyfish
  • Heat dissipation
  • Quiet fan
  • Quiet fan design
  • Manufacture: Poafamx
  • Item Weight: 4.33 pounds
  • Editor's Impressions Of The Poafamx
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Poafamx Final Thoughts

"I like the size."

This does a great job at regulating the temp in my 10 gallon. So when I first received it it didn't work and I was very disappointed. I'm not a big fan of the big glass tubes. I like to keep it at 72 and from my thermometer it is reading at exactly 72. I dont know, and havent tried just yet. My fish likes to get close to it and he has never been hurt by it. I will definitely be buying another one for my other tanks at bigger one.

Overall Score
3.0


(7 Points)

9. Teco Tank TK-500 1/6 HP Aquarium Chiller

Teco US T143132 First Impressions

"I angled it."

The temperature has been holding all day, even in a colder room. The suction cups are large, high quality and seem to stick great. The temperature lights up so it's very easy to read. I like the fact that it comes with a digital thermometer. I bought a similar one at the pet store and it barely worked. I have it set to 81F to get a 77F water temp. The temperature lights up so it's very easy to read.

  • Teco Tank TK-500 1/6 HP Aquarium Chiller
  • For Typical Consumer Aquarium Sizes up to 130 Gallons
  • Built-in Heater, Rotatable Top Exhaust Conveyor and Magnetically-Affixed Filter Screen
  • Intuitive and Accurate Digital Thermostat Controller (ºF or ºC)
  • 1/6 Horsepower Motor and 450 Watts of Cooling Capacity
  • Made in Italy, 2-Year Limited Warranty
  • Manufacture: TECO Refrigeration Technologies, S.r.l.
  • Product Dimensions: 12.2 x 12.2 x 16.38 inches; 36.38 Pounds
  • Editor's Impressions Of The Teco US T143132
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

Teco US T143132 Final Thoughts

"Will buy again."

I use a 50 for a 5 gal and a 10 gal tank. I love the heater otherwise, but I'm afraid some water has gotten inside the heater. Keeps the temperature within 1 degree of what you set it to at all times. I have a 10gallon tank that was at 72 degrees. I have 3 of the Fluval heaters, in various sizes. I left seller feedback yesterday but have yet to hear from the seller. You program it for temperature you want your tank to be.

Overall Score
4.0


(1 Points)

10. BOEESPAT 300W Aquarium Heater, Submersible Fish Tank Heater for 30-60 Gallon Tank, with Adjustable L...

User Ratings: 65 7

BOEESPAT First Impressions

"Buy with confidence!"

Also were nice along the whole process. Ick for instance detaches from fish at 86 degrees and dies at 89. So far I like it setup was super easy. Sometimes you may have to tinker around with the dial. My heater is fully submerged underwater and works perfectly fine. Seems to keep the temp n the tank fairly regular. Thanks for the great customer service!

  • BOEESPAT 300W Aquarium Heater, Submersible Fish Tank Heater for 30-60 Gallon Tank, with Adjustable LED Digital Temperature Controller, Memory & Overheat Protection Function
  • 【HIGN SAFETY】Fully submersible 300W aquarium heater equips memory and overheat protection function, it will stop heating automatically when the temp exceeds 96.8°F(36°C), the LED display has an indicator light for current and setting temp
  • 【EXTERNAL CONTROLLER】Fish tank heater build-in external IC temp controller, LED digital number shows current water temperature, there is a working indicator light, red light shows heating and it turns blue when reaches set temp
  • 【FULLY SUBMERSIBLE】Submersible aquarium heater waterproofing IPX8 max 1M deep water immersion, premium quartz and double sealed by a black protective guard make it pretty shatter-proof and explosion-proof and prevents electricity leakage
  • 【EASY INSTALLATION】Make sure thermometer is completely submerged underwater for minutes, temp controller is adjustable from 68 to 94°F (20°C ~ 34°C), just press set button to the set temperature, it begins to work after 3 seconds blinking
  • 【LARGE CAPACITY】300-watt aquarium heater applies voltage 110-120V, suitable for many tank capacity 30-60 gallon freshwater and saltwater aquariums, this thermostat will help to create a comfortable house for your pet turtles or fishes
  • ±1℃ temp accuracy
  • IPX8 waterproof grade
  • explosion-proof
  • Manufacture: BOEESPAT
  • Editor's Impressions Of The BOEESPAT
  • Heat Quality
  • Quality
  • Value For Money
  • Affordability

BOEESPAT Final Thoughts

"Yes, you read that right."

I use a 50 for a 5 gal and a 10 gal tank. It would stick out of my 30 g wide tank if I were to put it vertical. I use a 50 for a 5 gal and a 10 gal tank. It is a bonus that the heater is titanium. --Temperature adjustment labeling is on top rather than on the rod. But I am single and don't have to worry about this. Or better yet, conceal it to the back corner.

Overall Score
4.3


(95 Points)

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