K&H Thermo-Pond 3.0 Pond Deicer

World's most efficient patented and successful low-power pond de-icer Low power consumption of 100 watts Keeps a 12" hole in the ice of backyard ponds for only pennies per day Floats on water surface; designed for use in ponds at least 18” deep Never becomes hot thanks to its thermostatic control Safely use with a plastic pond or a pond liner Friendly to fish--prevents the buildup of toxic gases under the ice Cold weather tested in sub-zero temperatures in northern Wisconsin MET Safety Listed Warranty: 1-year