Hydor SLIM HEATER Betta Bowl Slim Fish Tank Heater Ideal for tanks 2-5 gallons

Practical and compact heater suitable for small aquariums, tanks and bowls in glass, plastic or acrylic. It also works under gravel.Completely submersible, it increases the temperature by about 5-10degree F degrees compared to the environment. Not suitable for dry use without water.Technology with innovative PTC protective film that avoids overheating for maximum safety and high resistance.Super slim, it hides in all spaces. Ready to use, without settings.Power 7,5 W. Overall dimensions: 5.4 x 2.5 in. Recommended for aquariums from 2 to 5 US Gal..