The new, easy-to-use Tetra HT 10, HT 30 and HT 55 submersible heaters created especially for aquariums ranging from 2 to 55 gallons. The electronic thermostat automatically adjusts heat output to keep the water at a constant 78?F. All you have to do is put it in the aquarium and plug it in!
Easy to conceal
Two Year Warranty