Tetra Ht40 Submersible Aquarium Heater

150 watt submersible heater for tanks 30 to 40 gallons

Electronic thermostat automatically maintains water temperature and prevents overheating, extending heater life

No adjustments are needed

The indicator light lets you know when the water is being heated (red) and when it is at the proper temperature (green)

Silicon carbide crystals improve heat distribution and transfer

Strong glass tube is heat and shock resistant