This is a very good selection. As we are talking cories here, the third and fourth are the primary foods, alternating days for variety. The second (Veggie Rounds) can be fed once a week if there are herbivores like whiptails, farlowella, otos, some plecos in the tank, but if not, don't bother. The shrimp and bug bites are both just about the best prepared foods for cories. Upper fish will relish the bug bites too. Afrozen "treat" once a week can offer more vazriety, I use frozen bloodworms and frozen daphnia as their treat a couple hours after the water change. The two prepared foods the rest of the time, and a fast day or two each week won't hurt any fish (except fry of course).