Use the Bermuda Pond Heater to effectively keep an area of your pond clear of ice. Keeping an area of the pond surface clear of ice allows vital oxygen to flow into the water as well as gases to be released. Plants oxygen production heavily reduced in the winter months so fish are reliant on the oxygen getting into the water from the surface. The heater is 150W with a brass casing for quick and economic heat transfer. Suitable for ponds up to 150m. Larger ponds can use multiple heaters. Comes with a five meter outdoor cable.