New Life Spectrum Nutri Cell is the most nutritionally complete diet for plankton-feeding marine invertebrates and SPS corals.The stable structure of this coral microfeeder allows for less nutrient loss, as well as cleaner,clearer water.These micro particles of food enhanced with phytoplankton and zooplankton are suspended in a nutrientrich,waterstable bead,which simulates the bioyancy of plankton.Particle sizes ranges from 10 to 80 microns, with 80percent of the feed around 50 microns.