This nutritional diet promotes health, color and digestion. Cobalt Color Flake Food features a nutritionally balanced formula for beautiful color, growth and palatability. It features the enhanced blue flake, which provides a combination of a triple-vitamin boost and natural immunostimulants that strengthens a fish's biological resistance to disease. The flakes are packed with powerful probiotics in the form of naturally occurring bacteria strains of Bacillus sp., proven to improve digestion and intestinal well being. It will not cloud water. This unique formula produces less waste for a cleaner aquarium.