Phytogold S Phytoplankton by Brightwell Aquatics provides phytoplankton ranging in size from 4 - 10-µm. This is ideallysized for many soft corals, clams,sponges, tunicates, tube worms, bryozoans, larval crustaceans, and juvenile fishes. Phytogold S provides the three omega-3 fatty acids EPA, DHA, and ARA; plankton present are particularly rich in the omega- 3 fatty acid DHA, as well as in several important amino acids. Phytogold is formulated to provide over 75- million phytoplankton cells per ml and is supplemented with a proprietary amino acid to aid in coloration of invertebrates. Product does not require refrigeration.