Marina Mini Submersible Pre-set Heater. Maintain the temperature in your tank with this submersible heater. The convenient compact size fits in most aquariums and can be used in fresh or salt water.
These heaters are easy to set and adjust. Contains an on/off light indicator and are made of high impact safety glass. They have suction cup brackets for easy installation, a ceramic heater core, bumper guards for protection, a water proof seal, temperature set dial, and a max water level line indicator. This heater is not fully submersible!