The fully submersible Jager automatic aquarium heater is for both fresh and saltwater aquariums. Each unit has a precision, bi-stable thermostat, and the temperature is now easier to set with a new dial and accurate 1 in. increments from 65 to 93 F. These heaters have 2mm thick thermal shock resistant glass and extra sturdy construction. Also features 6 foot double insulated power cord, and a clip-on heater holder.
