Every aquarist knows this problem: You need to be away for several days, but you are uncomfortable about leaving your fish in the care of someone with no experience with aquariums. sera holiday is the ideal solution. sera has developed a completely new type of fish food that feeds your fish while you're away! Through an innovative manufacturing method, we've developed a high quality and nutritious food tablet that remains stable in water for a full 7 days - and won't decompose. The valuable ingredients in sera holiday are time-released, letting your fish to eat the food layer-by-layer. The selected ingredients, which include high-quality protein and essential minerals, ensure sera holiday is readily accepted by all ornamental fish in community aquariums.