Cobalt's ULTRA Spirulina formula is the ultimate diet for herbivorous tropical and marine fish. Featuring 20% spirulina, and enhanced with 40 ppm astaxinthin, garlic powder and paprika for maximum color and palatability. ULTRA flakes also feature new Prebiotic fibers that support healthy digestive probiotic bacteria that are coupled with Cobalt's incredible base formula that includes probiotics and Cobalt's BLUE Flakes that help support a healthy digestive and immune system. When all combined, ULTRA flakes are the most advanced nutrition that will keep your fish in top shape and color. Will not cloud water!