This is the blend I personally use in my hatchery. Specially Formulated for Angelfish and Discus, yet the perfect staple for any fish! These are big, crist flakes that contain probiotics!! This blend of flake offers strong color enhancers, and powerful growth stimulants, that provide your tropical fish with the highest amount of nutrition. Available in 2 oz, 4 oz or 8 oz packages for your convenience. Contact us directly for larger sized quantities.