Tetra HT40 Submersible Heater 150 Watt 24
This 150 Watt Submersible Heater is designed for 30 to 40 gallon Aquariums. The electronic thermostat automatically maintains water temperature. It prevents overheating which extends heater life. No adjustments 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 help and improve heat distribution and transfer. Strong glass tube is shock and heat resistant.