The K&H Thermo-Pond 100 Watt Pond Heater features a unique patented design that maintains a proper vent in pond ice for just pennies a day. The Thermo-Pond is thermostatically controlled to run when temperatures fall below 34 degrees Fahrenheit. Assists the escape of toxic gases through the hole in its center as it floats on the pond's surface. Will help maintain a safe environment for fish living under the ice, all winter long. Its unique design makes it completely safe when used with a pond liner or plastic pond. It has been tested in northern Wisconsin at temperatures of 20 degrees below zero Fahrenheit. Recommended for ponds up to 1,000 gallons. For larger ponds use additional units.
