Zooplankton (rotifers, Cyclops and Moina) are combined with phytoplankton (Spirulina, Nannochloropsis, and Isochrysis)! This is a very special mixture of tiny zoo-plankton critters mixed with Spirulina, Isochrysis and Nanochloropsis (three types of phytoplankton). It provides a complete and nutritious diet for all types of live corals (stony corals & soft corals) and other filter-feeding marine invertebrates. INGREDIENTS: Rotifers Brachionus sp., Cyclops copepods Cyclops sp., Moina Moina sp., Phytoplankton: Spirulina, Isochrysis and Nanochloropsis, Potassium ascorbate. (source of Stabilized vitamin C).