Top 10 Best 5 Watt Aquarium Heaters 2020

1. Aqueon 100106251 Preset Aquarium Heater,Black, 50W

  • No adjustment required
  • Auto shut-off
  • Preset to 78°, accurate to +/- 1°
  • Shatter resistant
  • Led light turns on when aquarium water is being heated

2. Marina Betta Submersible Heater for Aquarium

  • Creates ideal conditions for bettas to live in
  • Automatically reaches set temperature
  • Submersible heater for aquariums upto 1.5 gallons
  • Made of durable polymer, tougher than glass
  • Eight watts

3. Hygger 50W Mini Submersible Digital Display Aquarium Heater for Small Fish Tank, Compact

  • 🐠【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

4. GOOBAT Mini Betta Heater for Aquariums, Submersible Heater for Betta Tanks Up to

  • It’s made of durable ppc plastic, so it’s more resilient than traditional glass sleeve heaters.
  • Included suction cup allows you to easily install it inside your aquarium.
  • Designed to automatically reach and maintain a set temperature at 78°f ( + / – 2°) – no manual adjustments needed
  • Red indicator light illuminates to let you know the heater is working.
  • 15-watt, submersible heater helps create the ideal water conditions in bowls or tanks up to 5.5 gallons.

5. Betta Fish Tank Heater, 25W Mini Aquarium Heaters with 2 Artificial Plants 1

  • Mini sized- fully submersible compact betta fish heater gift with 2pcs aquarium decor artificial plant. specific perfect for mini aquarium under 5 gal/20l.for all shapes and materials fish tanks, whether it is glass or plastic, all can be used. zeetoon mini heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. intellig…
  • Smart thermostat: zeetoon mini heater different from a manually adjusted heater. our heater automatic temperature regulate on 73ºf-82ºf(25℃-28℃) , no need to set. prevent electric shock and burns. keep you and your family safe. position it near a strong water flow for whole aquarium are in the same temperature. the outlet of filter is ideal. when there is a heater in th…
  • Betta fish’s favorite gifts: zeetoon fish tank heater suitable for all kinds of aquarium pets, betta, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. your little fishes and turtles will no longer fear the winter! 2 aquarium decor artificial plants make their homes beautiful not boring. 1 stick-on thermometer strip, eliminate…
  • Smart control: adopted intelligent circuit board, with a precise sensing probe and thermostat heating system. unlike other conventional heaters, need you to manually adjust the temperature. our smart aquarium heater just plug the power cable then it will work. it works will automatically turn on/off to achieve the setting temperature constantly and stably 73ºf-82ºf(25℃-…
  • High quality: made by heat resistant abs housing, sandy quartz filler and mch alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. this product have certificated by ce, rohs, fcc certifications. we provide 1 year quality assurance for this product, we will provide replac…

6. Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-100W

  • Adjustable temperature: the temperature of the fish tank heater can be adjusted automatically. temperature setting range: 20°~34°c(65° f – 93° f), and the display is easy to read.
  • Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • High quality: aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.
  • Fully submersible. power: 100w. suggested water volume: 20 gal.
  • Convenient and safe: our aquarium heater thermostat has two suction cups for attachment to the fish tank. the polarized plug prevents electrical shock.

7. VIVOSUN Submersible Aquarium Heater 50W Mini Fish Tank Heaters with Intelligent LED Temperature

  • Safety guarantee: rated ip68, the highest waterproof level, guaranteed that no water will enter nor will power leak; made of fire-resistant and temperature-resistant plastics; guaranteed against electrical shortages
  • Low water level heating: this product is 1.2” thick, which means it can operate in water levels of the same height; it’s perfect for 3 to 5 gallon tanks, but also works with much bigger aquariums; be sure to match the power to the aquarium dimensions
  • Miniaturized with great effect: with a size of 12.5” (h) x 6.5” (w) this aquarium heater is compact and won’t take up much space and is easy to hide; whether your tank is 3 gallons or 60 gallons, you’ll find a use for vivosun’s aquarium heater
  • Thermostat heating system: the vivosun aquarium heater can control water temperature up to your desired temp value and will automatically control the water temp as needed; your fish, turtles, frogs, or other little pets will spend a warm winter with this aquarium heater
  • External temperature controller: the touch-button controller adjusts the temperature without getting your hands wet. it’s easy to control the temp from 68℉/20°c to 94℉/34°c; check the size chart to find your desired fish tank heater

8. FREESEA 25 Watt Aquarium Betta Fish Tank 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.
  • ★【25 watt heater】: this aquarium heater is suitable for 1 to 5 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.

9. Marina C10 Compact Heater, 10-Watt

  • Reliable performance; maintains set temperature of 78 degrees fahrenheit
  • Made of durable polymer
  • Heater was designed to reach and maintain the set temperature of 26ºc (78ºf), provided that the maximum difference between the ambient and set temperature is less than 5ºc (9ºf)
  • Fully submersible compact heater
  • Suitable for fresh or saltwater aquariums
  • Ideal for aquariums up to 2.65 gallons; 2-year warranty

10. Aqueon Mini Flat Heater, 5 Watts

  • Fully submersible
  • Shatterproof construction
  • Ideal for small glass or acrylic desktop aquariums up to 2. 5 gallons
  • Quick and easy installation, vertical or horizontal placement using suction cups
  • Note: do not operate or leave product plugged in when it is outside of water