Aqua One Aquarium Heater 100w

The Aqua One Glass Heaters are designed to be completely submerged, and come equipped with a double insulation for optimum safety and efficiency. There is an easy-to-read thermometer on the front to show the temperature of the aquarium water, with a simple adjustable dial to set the temperature you require.

This features an automatic shut off and on light, so you know when the unit is actively heating, and when its turned off.