Extra small slim heater is a great choice for Betta fish & suitable for fish tanks 2 to 5 gallons, measures 5.4L x 2.5W inches, 7.5 watt; Plug and Play universal fish tank heater; No temperature to set; slim heater provides warmth for betta fish without taking up much room

As a dedicated Betta fish enthusiast, I’ve been on the hunt for an efficient yet compact heater for my small aquarium. Enter the Hydor Betta Bowl Slim Fish Tank Heater, a perfect fit for tanks ranging from 2 to 5 gallons. Measuring just 3.5 inches in diameter, it truly lives up to its ‘slim’ moniker, making it an unobtrusive addition to my aquarium setup.

The heater is incredibly easy to use, with a simple plug-and-play design that eliminates the need for any complicated settings. It’s been consistently maintaining the water temperature of my tank, providing much-needed warmth for my Betta friend without taking up excessive space.

One feature I particularly appreciate is its versatility. Whether you’re using glass, acrylic, or plastic fish bowls and aquariums, this heater can be trusted to do its job effectively. It can even be safely used under gravel, offering added convenience for setup.

Its 90-degree angle design is a thoughtful touch, making it ideal for Betta aquariums. The heater can be easily placed submerged in water or even under the tank gravel, providing flexibility in placement.

What’s more, this slim fish tank heater is suitable for both fresh and saltwater environments, making it a versatile choice for various aquatic creatures such as Betta fish, goldfish, and glow fish. Its ability to blend seamlessly into the environment makes it an easy-to-hide option.

  • The Slim heater will increase the water temperature of mini aquariums up to 10 gallons by a few degrees compared to the ambient room temperature. The Slim heater can be used in glass, acrylic, plastic fish bowls and aquariums. Safe to use under gravel. Please note, Slim heaters are not suitable to be used in environments without water
  • Extra small slim heater is a great choice for Betta fish & suitable for fish tanks 2 to 5 gallons, measures 5.4L x 2.5W inches, 7.5 watt; Plug and Play universal fish tank heater; No temperature to set; slim heater provides warmth for betta fish without taking up much room
  • Heater can easily be placed submerged in water or even under the tank gravel; The 90 degree angle makes this great for Betta acquariums; Safe to use in glass, plastic and acrylic fish tanks
  • Plug & play universal fish tank heater, the slim fish tank heater can be used in both fresh or saltwater environments
  • Easy to hide fish tank heater is ideal to use for betta fish, gold fish and glow fish
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