Marineland Precision Submersible Heater for Aquariums up to 80 Gallons

This 300 watt heater is for aquariums up to 80 gallons; Adjustable temperature dial allows you to set the temperature 1 degree with every click.Thermal Switch automatically turns off as temperature rises above an internal preset and turns back on once it cools down.The advanced heating element contains a mica core surrounded by a mesh heating element for superior heat transfer with enhanced durability.Advanced mounting bracket securely attaches to glass and provides 3 window positions to view the temperature display.Easy to view sliding scale tells the exact temperature setting; Top dial view shows the setting from an additional location.