Cobalt Pro Breeder flake is a powerful blend of beef heart, earthworm, egg, spirulina, and high quality salmon meal designed specially to condition and stimulate fish to breed. Enhanced with Probiotics and Cobalt Blue Flake's triple vitamin dose and immunostimulants. Will not cloud water. In addition, each formula also includes the signature Cobalt BLUE flake that is super-packed with immunostimulants and a triple-vitamin boost which help the fish fight off disease and helps keep it in top shape and color.