Fresh water year-round, no matter the weather? It’s no problem with the Farm Innovators Traditional Floating Fish Tank De-Icer! with 1500 watts of power, this economical floating de-icer will keep your tank’s water freeze-free. Its thermostatically-controlled design is meant to only operate when necessary, so that no energy is wasted and your tank’s water will ready to go, no matter the temperature. This product is intended for use in metal tanks.