This coral feast ultra is naturally rich in protiens its a mix of coral powder and pellet mix . Can be fed directly or mixed with your own blend of feed. please store in a cool dry place it has a Nice smell, undoubtedly highly attractive to corals and fish being fed on it with its mixed size of ingredients it can be feed to sps, lps and softys with the fish taking a liking to it too. we use this in our our coral farm to feed our corals