Phytogreen M Phytoplankton by Brightwell Aquatics provides phytoplankton ranging in size from 10 - 15-µm. Phytogreen M is ideallysized for many soft corals, clams, sponges, tunicates, tube worms, bryozoans, larval crustaceans, and juvenile fishes. Features a relatively high amino acid content compared to many other species of phytoplankton; also quite rich in the omega-3 fatty acid EPA, as well as in Chlorophyll A. Phytogreen M is formulated to provide over 5- million phytoplankton cells per ml. Supplemented with a proprietary amino acid to aid in coloration of invertebrates. Product does not require refrigeration.