This energy efficient sinking de-icer keeps your entire tank ice-free without overheating the water. Safe for animals, this de-icer includes a durable PTFE coating for easy cleaning. The large, finned base runs cooler than conventional de-icers, making it safe for plastic or metal tanks alike. Multiple thermostats for safe, efficent control. 6-foot cord with durable anti-rub protector. LOCKNDRY compatible. cULus Listed. 1500 Watts, 120 Volts, 60 Hz.