Completely Submersible Type Automatic Dual Protection Aquarium Steel Heater. It Provides A Healthy And Safe Mode To Your Pet Fish. You Can Adjust The Temperature As Per The Convenience and requirement Of Your Fish And Turtles , Sensitive And Reliable Thermostat Maintains Uniform and Accurate Temperature for your Fish And Turtles. Heating Element Is Highly Efficient And Compact Designed For Extended Use And Completely Safe Supplied With Strong Support Clips And High Quality Suction Cup.