Customize meal size and time: The programmed electric feeder can dispense food size by adjusting 9 speeds. You can feed your fish and turtles 4 meals every day, and each meal has 1-3 control portions, which can help the pet develop a good feeding habit. Drying design unique: Integrated ventilation system to keep food dry. With each turn, the feed adjustment cap always faces upward, preventing water vapor from causing food spoilage. Large capacity: 200ml large capacity feed bucket , suitable for a variety of fish foods such as pellets, flakes and powders. Low consumption: powered by 2 AA batteries (not included). According to different power sets, the fish feeder can be used for 3-6 months, which is energy-saving and environmentally friendly. Two installation ways: place the bracket attach the feeder to the edge of the aquarium/aquariums, then tighten the screws; separate the two sides of the hook and loop, then stick one side on the bottom of the automatic feeder and the other side of the fishing feeder on the aquarium cover, then the fish food will fall during rotation.