Zoecon provides the essential marine omega-3 fatty acids EPA and DHA, which provide saltwater and freshwater fishes with the building blocks to grow and maintain long-term health. Used as food soak, Zoecon can help reverse head and lateral line erosion by correcting diets deficient of essential marine lipids. Useful in raising healthy fish and invertebrate larvae, as well as fortifying live food for juvenile and adult fishes and invertebrates. Phosphate and nitrate free, and contains no yeast or sugars. 4 oz. treats 31 gallons.