The Eheim Twin Fish Feeder has two 80 ml feeding containers for all kinds of food--granules, sticks, pellets, and flakesTwo types of food can be given at the same time, providing the best possible feeding for all types of fish and all areas of the aquariumFeeder is aerated to prevent food stickingEach chamber can be programmed individually"Random Feed" function replicates natural feedingLarge display