10 Best Aquarium Heater For 20 Gallon Tank of May 2022

If you are in the market for a Aquarium Heater For 20 Gallon Tank , there is no better time to buy than right now! With prices still on the low side, you can get one of these top 10 Aquarium Heater For 20 Gallon Tank even if you have a tight budget.
Rank Product Name Score
1
Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
9.68
2
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
9.48
3
GMsound Aquarium Heater Submersible Fish Tank Water Heater Thermostat (50W for 10-20Gal)
GMsound Aquarium Heater Submersible Fish Tank Water Heater Thermostat (50W for 10-20Gal)
8.98
4
Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank
Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank
9.7
5
IOAOI Aquarium Heater for Fish Tank 50W for up to 20 Gallons Tanks Shatterproof for Both Marine and Fresh Water Engineering Plastic Tube Outside and Stainless Steel Tube Inside Temperature Adjustable
IOAOI Aquarium Heater for Fish Tank 50W for up to 20 Gallons Tanks Shatterproof for Both Marine and Fresh Water Engineering Plastic Tube Outside and Stainless Steel Tube Inside Temperature Adjustable
9.42
6
Uniclife 50 W Aquarium Adjustable Heater with External Temperature Controller Submersible Heater with LED Indicator Light for 5-20 Gallon Fish Tank
Uniclife 50 W Aquarium Adjustable Heater with External Temperature Controller Submersible Heater with LED Indicator Light for 5-20 Gallon Fish Tank
9.68
7
FREESEA Aquarium Fish Tank Heater: 200 Watt Submersible Betta Heater with Adjustable Temperature Display for Aquatic Fish Tank | Saltwater | Freshwater
FREESEA Aquarium Fish Tank Heater: 200 Watt Submersible Betta Heater with Adjustable Temperature Display for Aquatic Fish Tank | Saltwater | Freshwater
9.48
8
Petbank 100W Aquarium Heater, with Temperature Remote Control and LED Temperature Display, Submersible Aquarium Heater with Thermometer Strip & Use Time Display Suitable for 10-20 Gallon Fish Tank
Petbank 100W Aquarium Heater, with Temperature Remote Control and LED Temperature Display, Submersible Aquarium Heater with Thermometer Strip & Use Time Display Suitable for 10-20 Gallon Fish Tank
9.56
9
Orlushy 100W Submersible Aquarium Heater, Fish Tank Heater with Adjustable Temperature and 2 Suction Cups for 10-20 Gallon Tank 6ft Power Cord
Orlushy 100W Submersible Aquarium Heater, Fish Tank Heater with Adjustable Temperature and 2 Suction Cups for 10-20 Gallon Tank 6ft Power Cord
9.44
10
KASANMU Aquarium Heater 50W/100W/200W/500W Temperature Adjustable Fish Tank Heater Suitable for Saltwater and Fresh Water
KASANMU Aquarium Heater 50W/100W/200W/500W Temperature Adjustable Fish Tank Heater Suitable for Saltwater and Fresh Water
9.44

Top 10 Aquarium Heater For 20 Gallon Tank of 2022

Orlushy

1
Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

by Orlushy

9.68/10

Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

Color -
Prime Status Yes
Warranty -
Brand Orlushy
Rating 9.68/10

Features

  • ★100W aquarium heater is suitable for 10 to 20 gallons aquariums,Length - 9",voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals
  • ★Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • ★Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached

FREESEA FS28-50W

2
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display

by FREESEA

9.48/10

FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display

Color Submersible Heater with External Controller
Prime Status Yes
Warranty -
Brand FREESEA
Rating 9.48/10

Features

  • ★ Temperature range: 59°F~94°F, display Fahrenheit °F, this heater is designed for1~10 gallons tank. Upgrade function: The heater will auto shut off when it is out of water and turn normal when fully in water again.
  • ★ Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
  • ★ Touch button, cyclic adjust temperature , easy to use and Safety.
  • ★【Note】:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • ★【SATISFACTION GUARANTEED】Gain the confidence to go hard with us! Our Aquarium Heater 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, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

GMsound

3
GMsound Aquarium Heater Submersible Fish Tank Water Heater Thermostat (50W for 10-20Gal)

by GMsound

8.98/10

GMsound Aquarium Heater Submersible Fish Tank Water Heater Thermostat (50W for 10-20Gal)

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Color 50W for 10-20Gal
Prime Status Yes
Warranty -
Brand GMsound
Rating 8.98/10

Features

  • Fully Submersible. Power: 50W. Suggested water volume: 10-20 gal.
  • Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 65° F - 93° F(20°C~34°C), and the display is easy to read.
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.Fully suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • Set desired aquarium temperature & on/off indicator light confirms operation. *On/off indicator light allows simple, visual confirmation of heater operation.
  • Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.

Zacro

4
Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank

by Zacro

9.7/10

Zacro Aquarium Heater, 100W Submersible Digital Display Mini Fish Tank Heater with Intelligent LED Temperature Display and External Temperature Controller, for 10-20gal Fish Tank

Color -
Prime Status Yes
Warranty -
Brand Zacro
Rating 9.7/10

Features

  • INTELLIGENT TEMPERATURE CONTROL: An intelligent IC chip controls the heater temperature, making the temperature difference within ±2ºF. Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating. Provide the best living environment for your aquatic creatures.
  • DIGITAL DISPLAY&REMOTE CONTROLLER: Digital LED display shows real time water temperature. Heating temperature range from 68 to 91°F. The remote-button controller adjusts the temperature without getting your hands wet.
  • AUTOMATIC OVERHEATING PROTECTION: Once set the desired temperature, this fully submersible heater lights on red indicates that it is heating. It will auto shut off once it reach set temperature. If the heating rod temperature reaches 96.8°F (36°C), the heating rod will stop heating. The thermometer can observe the water temperature at any time.
  • SHUT OFF WHEN OUT OF WATER: Please note that this a fully submersible aquarium heater for fresh water and saltwater tank, when the top part of the heater is out of water it will auto shut off and the led displaying Er. The product uses explosion-proof quartz tube and is equipped with a plastic anti-collision sheath to prevent your aquatic organisms from being injured by touching the heating rod.
  • Our heating rods can be used continuously for up to 10,000 hours and can display the use time. Let you replace the heating rod in time to ensure the continuous water temperature.

IOAOI

5
IOAOI Aquarium Heater for Fish Tank 50W for up to 20 Gallons Tanks Shatterproof for Both Marine and Fresh Water Engineering Plastic Tube Outside and Stainless Steel Tube Inside Temperature Adjustable

by IOAOI

9.42/10

IOAOI Aquarium Heater for Fish Tank 50W for up to 20 Gallons Tanks Shatterproof for Both Marine and Fresh Water Engineering Plastic Tube Outside and Stainless Steel Tube Inside Temperature Adjustable

Color -
Prime Status Yes
Warranty -
Brand IOAOI
Rating 9.42/10

Features

  • This 50W aquarium heater is fitted with stainless steel tube inside and engineering plastic tube outside to protect against damage. No glass components. Equipped with dry-fire protection device.
  • Temperature range of this tank heater is from 68℉-88℉, adjustable via a simple knob on the top. +/- 1 ℉accuracy. The light will go on while it’s working and off while not.
  • Can be placed vertically or horizontally. BUT NOT TILTED. It will not operate if the bottom is higher than the top. Must be FULLY submerged.
  • Can be used both in freshwater and saltwater. Will not rust.
  • Dimensions of this fish tank heater: Height 8.6 in, Width 0.8 in of the tube and 1.2 in of the top. 6 ft cord.

Uniclife

6
Uniclife 50 W Aquarium Adjustable Heater with External Temperature Controller Submersible Heater with LED Indicator Light for 5-20 Gallon Fish Tank

by Uniclife

9.68/10

Uniclife 50 W Aquarium Adjustable Heater with External Temperature Controller Submersible Heater with LED Indicator Light for 5-20 Gallon Fish Tank

Color Black
Prime Status Yes
Warranty -
Brand Uniclife
Rating 9.68/10

Features

  • For 5 - 20 Gallon Tank: Measure 6.3'' L x 1'' D. Applicable for aquaculture and fresh, marine and tropical aquariums, providing the best living environment for your fish.
  • Adjustable Temperature: Come with an external controller ranging from 65 °F to 89 °F, allowing for precise temperature control without wetting your hands.
  • Automatic Shut-off: Its LED indicator turns red during work and automatically shuts off when it reaches your desired temperature. An essential reminder for heating.
  • Watertight Design: Made of 2 mm shatterproof, heat-resistant and extra thick quartz glass to prevent electricity leakage and scratching, ensuring the security of your fish.
  • Easy to Install & Use: Fully submerge the heater and fix it tightly to the tank vertically or horizontally with 2 strong suction cups. Ready for use after being powered on.
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FREESEA

7
FREESEA Aquarium Fish Tank Heater: 200 Watt Submersible Betta Heater with Adjustable Temperature Display for Aquatic Fish Tank | Saltwater | Freshwater

by FREESEA

9.48/10

FREESEA Aquarium Fish Tank Heater: 200 Watt Submersible Betta Heater with Adjustable Temperature Display for Aquatic Fish Tank | Saltwater | Freshwater

Color -
Prime Status Yes
Warranty -
Brand FREESEA
Rating 9.48/10

Features

  • 【 200W Aquarium Heater 】 200 watt submersible heater for aquarium, voltage: 110~120V, is suitable for use in 20-35 gal betta fish turtle tanks and aquariums. The power cord is 5ft, long enough for use indoors. With 2 strong suction cups at the back side of the betta heater, it's easy to install it on to glass, acrylic or plastic tank.
  • 【 External Controller 】 FREESEA fish heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient to adjust temperature that range from 63℉ to 94℉. Every time you set the temp, just press the button over and over until it reaches to your desired temp, then stop and wait the digit flashing for 3 times, then setting is done.
  • 【 LED Temperature Display 】 Digital led temperature display shows the real-time temperature and error code on the screen. When the submersible tank heater is heating, there indicator light above the digit is on red. The heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time.
  • 【 Note 】 Do not operate or leave product plugged in when your water tank is out of water. This betta fish heater is 100% submersible use only, during its heating time, it must be 100% submerged into the water. It is better to install a water pump to help water circulating while heating. Because of the high power, we do not recommend you to use on turtle tank.
  • 【 Satisfaction Guaranteed 】 The aquarium submersible water heater is built with durability in mind and safety for each design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

Petbank

8
Petbank 100W Aquarium Heater, with Temperature Remote Control and LED Temperature Display, Submersible Aquarium Heater with Thermometer Strip & Use Time Display Suitable for 10-20 Gallon Fish Tank

by Petbank

9.56/10

Petbank 100W Aquarium Heater, with Temperature Remote Control and LED Temperature Display, Submersible Aquarium Heater with Thermometer Strip & Use Time Display Suitable for 10-20 Gallon Fish Tank

Color -
Prime Status Yes
Warranty -
Brand Petbank
Rating 9.56/10

Features

  • 【Intelligent Temperature Control】The intelligent IC chip adjusts the temperature, the temperature accuracy is within ±2°F (±1°C), and it is automatically heated to the set temperature. It is suitable for ultra-low water level heating. It is specially designed for tortoise tanks and fish tanks.
  • 【LED Digital Display & Temperature Remote Control】Cycle temperature adjustment 64-91℉; LED digital display and matching thermometer can observe the water temperature in real time; the temperature remote control allows you to avoid wet hands when adjusting the temperature.
  • 【Safety & Explosion-Proof】The aquarium heater automatically cuts off power when leaving the water. It uses an explosion-proof quartz tube and is equipped with a plastic anti-collision sheath to prevent your aquatic organisms from being injured by touching the heating rod.
  • 【Show Usage Time】Real-time monitoring of the life of the heating rod, which is convenient for you to replace the heating rod in time to ensure the continuous water temperature. The heating rod can be used continuously for up to 10,000 hours.
  • 【Note】It is forbidden to expose the main part of the aquarium heater to the surface of the water during use, and 100% diving use must be guaranteed, otherwise the LED display will display an "Er" abnormal code.. Please unplug the power when cleaning the fish tank or changing the water in the aquarium.
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Orlushy

9
Orlushy 100W Submersible Aquarium Heater, Fish Tank Heater with Adjustable Temperature and 2 Suction Cups for 10-20 Gallon Tank 6ft Power Cord

by Orlushy

9.44/10

Orlushy 100W Submersible Aquarium Heater, Fish Tank Heater with Adjustable Temperature and 2 Suction Cups for 10-20 Gallon Tank 6ft Power Cord

Color 100Watt(pack of 1)
Prime Status Yes
Warranty -
Brand Orlushy
Rating 9.44/10

Features

  • 【100 Watt Aquarium Heater】: 100w aquarium heater is for 10-20 gallons fish tank, voltage 120V/60Hz, power cord 6(ft), heating rob length-9.5 inches.The temperature can be set to the values ranging from 68 to 93°F, please choose the right wattage aquarium heater according to our size chart
  • 【Updated Design】: The aquarium heater is made of quartz glass, featuring corrosion-proof and explosion-proof. It adopts brand new structural design and helps increase dispersing heat area and shorten the length of the heating rob, thereby raising heating efficiency by 20%
  • 【Intelligent Safety Protection】: When the indicator lamp is on, the heater starts to heat up the water. With automatic shut-off function and the thermostat inside, the heater maintains the tank water in stable and constant temp, automatically stop or start heating to keep the temp stability
  • 【Wide Range of Application】: The heater is suitable for use in marine water or fresh water. With 2 strong suction cups, the heater can be installed horizontally or vertically to the tank side and held in place well for aquariums, fish tanks, aquacultures and hydroponic systems
  • 【Tips】: 1.Please disconnect the power supply, remove the heater out the water after cooling it down for 10 minutes before cleaning the aquarium or changing the water 2.Please ensure the heater is fully submerged in water

KASANMU

10
KASANMU Aquarium Heater 50W/100W/200W/500W Temperature Adjustable Fish Tank Heater Suitable for Saltwater and Fresh Water

by KASANMU

9.44/10

KASANMU Aquarium Heater 50W/100W/200W/500W Temperature Adjustable Fish Tank Heater Suitable for Saltwater and Fresh Water

Color BLACK
Prime Status Yes
Warranty -
Brand KASANMU
Rating 9.44/10

Features

  • 【THE RIGHT SIZE】200W Aquarium Heater suitable for 30 to 50 gallons aquariums,Length - 13",voltage 110-120V,power cord is 5ft, please choose the right wattage aquarium heater according to our size chart.
  • 【THE RIGHT SIZE】200W Aquarium Heater suitable for 30 to 50 gallons aquariums,Length - 13",voltage 110-120V,power cord is 5ft, please choose the right wattage aquarium heater according to our size chart.
  • 【APPLICABLE SCENE】Suitable for fresh water tank,marine tank,reef tank,tortoise tank,hydroponics.Let your pet grow healthier.
  • 【WHAT YOU GET】You will get KASANMU aquarium heater, and fixed suction cup X2, you can fix the heater on the aquarium, the heater is easier to hide and make the aquarium more beautiful.
  • 【USE and AFTER-SALES】First adjust the required temperature, and then fix the suction cup, the heater must be completely immersed in water. Finally power up. When cleaning is needed, first unplug the plug and wait for the heater to cool down before taking it out.We provide you with 24/7 customer service for 12 months. If you have any questions about the products, please contact us directly, we will provide you with professional solutions.

Best Aquarium Heater For 20 Gallon Tank brands

  • Orlushy
  • FREESEA
  • GMsound
  • Zacro
  • IOAOI
  • Uniclife
  • Petbank

Buying Guide

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