DE-ICER CONVERTABLE 1250W H418C, converts between a floating and submergible de-icer in less than 30 sec without tools. Simply twist off the floating top, remove legs from inside top, insert legs into the base and place in bottom of tank. Cast aluminum construction helps retain heat and keep water warmer longer. Uses about 20% less power than 1500 watt de-icers; thermostatically controlled to operate when water is 35-45ºF. Features heavy duty anti-chew cord protector. Safe in plastic tanks.