Specially formulated for feeding koi and goldfish in spring and autumn water conditions. When koi and goldfish are fed a high-protein diet in water temperatures below 70 degrees, they can only digest a limited amount of protein. The remaining protein is excreted as toxic ammonia, decreasing water quality. For feeding fish when the water is cool, between 55 and 70 degrees. Reduces pollution and ammonia produced by fish waste. Contains a stabilized vitamin C and a complement of important vitamins and minerals to help maintain the immune system of pond fish. Contains spirulina algae, chitin and carotene to develop vibrant fish color. Formulated with a unique blend of amino acids and minerals to help supplement the dietary requirements of koi and goldfish in cool water.