Tetra Submersible Heater

The Tetra Submersible Heater features an electronic thermostat that automatically adjusts heat output to keep water at a constant 78 degrees Fahrenheit. An indicator light lets you know when the heater is on and heating your aquarium.

Tetra 10 Submersible Heater: 50-watt, designed for aquariums 2 to 10 gallons in size
Tetra 30 Submersible Heater: 100 watt, designed for aquariums 10 to 30 gallons in size
Tetra 30 Submersible Heater: 200 watt, designed for aquariums 30 to 55 gallons in size