The Farm Innovators Floating Pond De-Icer automatically keeps a small hole open in ponds of 50 - 600 gallons during sub-zero temperatures. Maintaining an open area in patio ponds releases harmful gases that could be harmful to fish and plants. This powerful de-icer uses 1,250 watts and is thermostatically controlled to operate only when temperatures fall below 35 degrees Fahrenheit. Constructed of patented cast aluminum, the Ice Chaser achieves maximum durability and ultimate efficiency for use in all ponds. Made in the USA.