Kent Phytoplex is a highly concentrated complex of aqua cultured, naturally occurring marine phytoplankton - It contains Nannochloropsis, Tetraselmis and Isochrysis sp. Tahitian ranging in size from 2 to 15 microns - Phytoplex provides necessary proteins, carbohydrates, and lipids for live hard & soft corals, tube worms, clams and other invertebrates - It is rich in the omega-3 fatty acids, DHA and EPA and is useful in feeding rotifers and other plankton and in raising larval fish. Phytoplex is grown in cold saltwater under laboratory conditions. It contains over 3 billion cells per capful and is typically about 15 times as concentrated as competing live cultures, meaning that one 8 oz. bottle of Phytoplex has more phytoplankton cells than 1 gallon of the competition. It is free of viruses, toxins and heavy metals which can be a problem when using live algae cultures, cultured in outdoor ponds. Phytoplex contains Nannochloropsis, a small green flagellate and Tetraselmis, a large green flagellate both containing high EPA lipid levels as well as high protein contents. It also contains Tahitian Isochrysis, a small yellow flagellate which is rich in protein, carbohydrates and DHA lipids. Phytoplex is very useful in SPS and soft coral propagation as well as overall reef maintenance.