Cobalt ULTRA Worm Medley is for all worm loving tropical fish. Formulated with an equal mix of dried earthworm powder, dried blackworms and dried bloodworm based flakes and enhanced with 40 ppm astaxinthin, garlic powder and paprika for maximum color, consistent growth, and palatability. ULTRA flakes also feature new Prebiotic fibers that support healthy digestive probiotic bacteria, 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!