EKOMIXO FISH FEEDER W/AIR CONN 3 FEEDINGS BATTERY OPERATED The Ekomixo Automatic Fish Feeder uses 2 AA batteries (not included) and holds 5 * 5 cubic inches of flake foods * Easy settings allow up to three feedings per day * Suitable for marine, tropical aquariums and terrariums, the Ekomixo can accommodate flake, pellet, or tablet foods * Special mixing vibrations prevents clumps from forming.