Top 10 Best Cheap Aquarium Heaters 2020

1. hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank, Compact and Fast Heating Thermostat, with External Controller and Built-in Thermometer, for Betta, Turtle

  • 🐠【external controller】easy to set the temp on the controller, only show farenheit temp, you can set the temp range from 63℉ to 94℉, temp accuracy 1℉. 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. keep the controller away from water, it’s not…
  • 🐠【reliable thermostat】this an automatic aquarium thermostat, after finishing the temp setting, you can be confidence on that it will maintain the tank water at the temp you set. the tank heater will stop heating when the water temp reaches to set temp, it will restart to heating when the water temp is 1℉ off the set temp. if the water temp is over 95℉, the heater will a…
  • 🐠【compact small heater】110-120v/60hz oval shape design little aquarium heater, fast heating for small fish tank. 50w tank heater is for 1-6.5gallon, 100w tank heater is for 6.5-13 gallon. heater dimension: 2.7×1.4x 4.5 inch. 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 …
  • 🐠【digital display】with led display on the midle of the heater front side, when the fish tank heater is heating, there indicator light above the digit is on red, when it stop heating, the light is off. the heater with a built-in thermometer, when temp setting is done, the led will show the water temp all the time. the led will display the set temp digit only when you pre…
  • 🐠【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 e1, when fully in water again it will return to normal work again

2. HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (50W)

  • 🐟 automatic constant temperature function: this fish heater, adjustable temperature 68 ~ 93 °f, will shut off automatically when the temperature is reached, no extra adjustment is required.
  • 🐟 50w aquarium heater, length 7.8-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 20 gallons.
  • 🐟 thickened glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes, your pets will no longer fear the winter.
  • 🐟 quick and easy installation, submersible fish tank heater, vertical or horizontal placement using suction cups. 1 extra powerful suction cups as your backup (total 3).
  • 🐟 bonus a stick-on thermometer, no need to buy another thermometer, 24-hour professional after-sales service.

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

  • ★ 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.
  • ★【note】:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • ★ temperature range: 59°f~94°f, display fahrenheit °f, this heater is designed for1~10 gallons tank.
  • ★ touch button, cyclic adjust temperature , easy to use and safety.
  • ★【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.

4. Orlushy Mini Aquarium Heater 50W,Small Fish Tank Heaters with LED Digital Temperature Display and External Temperature Controller for Betta Frogs Newts Turtles (50W)

  • ★ led display design: led digital display, external temperature controller,easy to use and safety.
  • ★ please be sure that the heater needs to be completely sunk into water, horizontal or vertical fixed in the water cycle better place, and let the working light can be seen as clear as possible.
  • ★ 50w submersible aquarium heater is suitable for 3-10 gallon.temperature range: 65°f~93°f(18°c~34°c), power cord is 5 ft.
  • ★ the digital smart aquarium heater is a heater and thermometer combined into one, eliminating the need for more equipment in smaller tanks.
  • ★ applicable for freshwater and marine aquariums, aquaculture, glass containers, and hydroponic systems

5. Orlushy Submersible Aquarium Heater 100W for Marine Reef Fish Tank Sump

  • ★it shows an area to adjust the temperature. it’s not exactly accurate but it turns easy and can be adjusted at small intervals.
  • ★precise temperature dial from 68 to 89°f allows for complete control of aquatic climate within a 1-degree difference.
  • ★100w aquarium heater is suitable for 15 to 30 gallons aquariums,length – 9″,voltage 110-120v, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • ★explosion proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • ★adjustable aquarium fish tank water heater sensitive and reliable thermostat maintains uniform temperature. automatic shut off when the temperature is reached

6. FREESEA 50 Watt Aquarium Submersible Betta Heater with Aquarium Submersible Thermometer

  • ★【temperature range】: 63°f~95°f , it is very easy to adjust the temperature you need, we also deliberately give each customer a free diving thermometer, you can observe the water temperature of the fish tank at any time.
  • ★【note】: 1. aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.,please unplug the power supply when cleaning the fish tank or aquarium water changes. 2. heater rod is suitable for people over 16 years of age. children or minors should be under adult guidance or supervision.
  • ★【50 watt heater】: this aquarium heater is suitable for 5 to 15 gallons aquariums, length – 6.8 inch,voltage 110-120v, power cord is 4.0 ft, please choose the right wattage aquarium heater according to our size chart.
  • ★【intelligent temperature control】: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. furthermore, automatic safety shut-off feature, and overheating protection.
  • ★【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.

7. PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks

  • ★【quick and easy installation】:vertical or horizontal placement using, aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.
  • ★【note】: do not operate or leave product plugged in when it is outside of water, children should be use this heater under adult’s guidance.
  • ★【betta heater】this fish tank heater should be 100% submerged into water, ideal for small glass or acrylic desktop aquariums up 1 to 6 gallons, not suitable for less than 1 gallon tank.
  • ★【how it works】: plug in, red light turns on, the heater will start working until water temperature up to 78°f, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°f. accuracy:±3°f
  • ★【satisfaction guaranteed】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.

8. PGFUNNY 25W Aquarium Heater, Fish Tank Heater for Betta Smart Thermostat, Slim Design Fit 3 to 5 Gallon Tank, with Thermometer Strips

  • 【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.
  • 【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 te…
  • 【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.
  • 【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.
  • 【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.

9. Marineland Precision Heater for Saltwater or Freshwater Aquariums, 200-Watt

  • Thermal switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display
  • This 200 watt heater is for aquariums up to 55 gallons. adjustable temperature dial allows you to set the temperature 1 degree with every click.
  • The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability
  • Easy to view sliding scale tells the exact temperature setting. top dial view shows the setting from an additional location.

10. DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

  • 🐠precise and constant temperature — no need to set, datoo fish tank heater will automatically keep the water temperature of the fish habitat at 78℉. this temperature is very suitable for betta and most tropical fish. when the water temperature is lower than 78℉, the heater starts to heat and the red light is on. when the temperature reaches 78℉, the heater stops heatin…
  • 🐠safe and durable — unlike traditional plastic seals, datoo uses a rubber sealing layer, which ensures that datoo has better sealing and safety performance, and will never leak electricity or water. quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage.
  • 🐠25w betta aquarium heater — creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. now datoo mini 25w aquarium heater can help you make this easier. precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. you will find it very eas…
  • 🐠the smallest 25w betta heater — for most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. this is the smallest 25w aquarium heater on the market, only 0.2 inches. no matter how small your fish tank is, it can be used perfectly in it, and you can’t even find it. very mini!!
  • 🐠one year warranty & satisfaction guarantee — this heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. when in use, it needs to be submerged 100% in water. we provide one year warranty and 24 hours professional customer service. buy with confidence!