"Ocean Nutrition Brand, 3.5oz. Made in the USA A natural gourmet diet rich in seafood and algae High protein content Supports coloration and will help maintain health and vitality Excellent for reef tank applications, including nano reef tanks Frozen Prime Reef(TM) is a gourmet frozen food for reef aquariums and is an excellent food for nano reefs. It is a special blend of fresh seafood, zooplankton and algae that mimics the nutritional value of a natural diet with an exciting flavor to entice finicky eaters. This formulation can be fed to a multitude of fish and invertebrates that require pure marine proteins and a balanced diet. Prime Reef(TM) does not contain a gel binder. It simultaneously feeds the fish corals and invertebrates in reef aquariums. The bite-sized pieces feed the fish; the juices and fine particles feed the reef. This blend of premium ingredients is easy for fish to digest so they produce less waste and aquariums stay cleaner. "