Reef Plankton All natural single ingredient diet for reef tanks. Simultaneously feed the fish, corals and invertebrates in your reef aquarium. Stimulates appetite, promotes proper growth, resistance to stress and a long healthy life. Reef Aquariums, corals, feather dusters, flame scallops, shrimp, anemones, damsels, clownfish, anthias, gobies. Great Coral & Invert Food!