4 - 10µm Phytoplankton suspension for soft corals, clams, sponges, and other filter-feeders Provides phytoplankton ranging in size from 4 - 10µm Ideally-sized for many soft corals, clams, sponges, tunicates, tube worms, and larval invertebrates. Formulated to provide over 75-million phytoplankton cells per ml Does not require refrigeration Supplemented with a proprietary amino acid to aid in coloration of invertebrates Formulated by a marine scientist