Filter Feeder Formula of microalgae is a blend of four Live Phytoplankton species: Nannochloropsis, Tetraselmis, Nannochloropsis and Porphyridium, that will nourish and provide pigments to your filter feeders. This blend supports corals, copepods, and filter feeders with a complete diet of highly nutritious essential fatty acids, proteins, vitamins, amino acids and carotenoids. Filter Feeder Formula will provide a balanced diet to your corals, clams and invertebrates. Phytoplankton improve water quality by out competing nuisance algae for nitrate and phosphate. Filter Feeder Formula is LIVE blend of cultures, NOT a ZOMBIE blend sold in the chilled section of the pet shop! Filter Feeder Formula blend of microalgae is a natural way to balance the biology of your ecosystem, and can even facilitate pH stabilization by fixing CO2.