Zoo Med's Turtlematic Turtle Feeder automatically feeds your turtle daily! Features: 12 hour sleep function at night to prevent waste. Can be used to feed your turtle while you are away, or to feed them on a routine schedule each day. Can be mounted anywhere on your tank; rotates 360'. Zoo Med's Aquatic Turtle Food bottles can screw directly to feeder top, increasing capacity. Available side mounted port to attach an air pump, providing positive pressue to feeding chamber reducing humidity and prolonging freshness. Uses three AA batteries (included).