The American Aquarist

Hydor mini aquarium heater. 2-5 gal. Extra small: easy to hide in mini-tanks and bowls. Extra safe Completely submersible, ideal for use in both glass and acrylic tanks No damage if left running dry. . Super safe, super easy. Helps increase by a few degrees Fahrenheit/Celsius the water temperature of mini aquariums compared to the ambient/room temperature where it is positioned (ready carefully instruction manual).