Phytoplan is a spray-dried blend of several strains of phytoplankton. The intact cells aren`t living, but when rehydrated, they are a microencapsulated source of color-enhancing beta-carotene and astaxanthin pigments, vitamins, amino acids and essential fatty acids. A concentrated food, much more economical to use than live phytoplankton. High in DHA. Ideal for filter feeding invertebrates like soft and stony corals, anemones, feather duster worms, clams, sponges, and turnicates. PhytoPlan simulates food webs in closed aquariuium ecosystems and, with daily addition, promotes the development of zooplankton. Soak dried foods in PhytoPlan to boost nutrition value. Specifications 1 oz. continer. Recommend dosage: 1/4 teaspoon (spoon provided) per 20 gallons daily.