The new, easy-to-use Tetra HT10 and HT30 Submersible Heaters are created especially for aquariums ranging from 2 to 30 gallons. The Tetra Submersible Heater contains an electronic thermostat that automatically adjusts the 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!
Tetra Submersible Heater Specifiations:
HT10 Heater is 5.5” Long
HT30 Heater is 6.5” Long
Electronic thermostat automatically maintains water temperature at 78 +/- 2 degrees F (25 +/- 1 degree C) and also prevents overheating, extending heater life. No adjustments are necessary.
The indicator light lets you know when the water is being heated (red light) and when it is at the proper temperature (green light).Silicon Carbide crystals improve heat distribution and transfer. Strong glass tube is heat and shock resistant. 2 year warranty.