Uses only 100 watts. Maintains a hole in backyard pond ice for just pennies a day. Floats on top of the water. Thermostatically controlled never to get hot. Completely safe. Fish friendly - assists the escape of toxic gases all winter long. Tested in northern Wisconsin at temperatures of 30 below zero Fahrenheit. UL and CMET listed. Warranty: One year limited. 12 in. Dia. x 4 in. H. The world's most successful and efficient low-wattage pond de-icer. For ponds up to 1000 gallons! The world's most energy efficient pond heater! Thermo-Pond is a unique patented pond heater that keeps a hole through the ice in backyard ponds for just pennies a day. In fact, Thermo-Pond can save up to $30.00 a month in electricity VS. those high wattage stock tank style de-icers! Just think, Thermo-Pond pays for itself in as little as 2 months. Unlike some other heaters, Thermo-Pond will never burn a pond liner or plastic pond. It naturally allows the pond to ice over while maintaining a hole through the ice. Thermo-Pond should be used in ponds that are deep enough to allow plenty of livable water under the iced portion of the pond.

• The world's most successful and efficient low-wattage pond de-icer
• Uses only 100 Watts and maintains a hole in backyard pond ice for just pennies a day
• Floats on top of the water and is completely safe when used with a pond liner or plastic pond
• Fish friendly - assists the escape of toxic gases all winter long to help maintain a toxic-free environment for fish living under the ice
• Tested in northern Wisconsin at temperatures of 30° below zero Fahrenheit and is MET Listed