The electronically controlled programming allows up to 4 daily feeding cycles of flake food in either single or double serving sizes. The large, easily read LCD display/clock also shows the programmed feeding times. Food level monitoring is easy performed through the clear food container. The integrated ventilator prevents moisture from spoiling food or clogging the unit, so maintenance is almost non-existent. This unique feeder uses every last flake in the bin to prevent waste. Mounts to the top of your aquarium hood.