Marineland Visi-Therm Submersible Aquarium Heater
Marineland Visi-Therm Submersible heaters feature a direct-set control which ensures accuracy to within one degree. These guaranteed durable heaters make setting and controlling the temperature of your aquarium easy. Simply set the temperature on the top dial which corresponds to the temperature scale on the side of the thermometer. In addition, the heater features a mounting bracket which is easy to install and enables viewing of the temperature from multiple angles. This heater is cUL-approved and is suitable for marine and freshwater aquariums.