The all new Cobalt Aquatics MINI-Therm compact and fully submersible heaters feature a constant ON design, in particular for small aquariums as much as 5-gallon. The heater casing is comprised of a thermal-plastic polymer that may be shatterproof. An internal ceramic heat radiator that gives even and the most efficient heat distribution from the heating elements. Highest for freshwater and saltwater aquariums and terrariums. To be had in 3 sizes so one can raise beneficial size aquarium temps as much as 10 degree. 5-watt- 1.2-gallon.
Compact for small aquarium