ChromaMax 1 oz., Super-Concentrated Phytoplankton Suspension for Filter Feeding Invertebrates, Kent Marine. A highly-concentrated blend of aquacultured, naturally-occurring phytoplankton, rich in protein, omega-3 and omega-6 fatty acids, phytonutrients, carotenoids, vitamins, and minerals. Carotenoids have been shown to increase coloration intensity of blue, green, orange, yellow, and red pigments in tissues of filter-feeding marine invertebrates. Size range of 5-25 ?m is optimal for feeding a wide range of filter-feeders. Properly preserved, contains no alcohol; Requires no refrigeration or freezing!