Cobalt Mini-Therm Fish Tank Heaters

Cobalt Mini-Therm Fish Tank Heaters are fully submersible, compact aquarium heaters made of shatterproof thermal-plastic polymer casing. It features a continuous "on" design with an internal ceramic radiator that provides even heat distribution to aquariums up to 5 gallons. Mini-Therm Fish Tank Heaters can increase the temperature of small aquariums up to 10ºF.