For my fish that eat dry I use a combination of growth formula, spirulina, and Blackworm flake, all custom made. Plus some shrimp pellets and algae wafers for my catfish. For the half of my fish that eat exclusively frozen or live foods I use frozen mysis shrimp, frozen bloodworms, frozen daphnia, live blackworms, live earthworms, and frozen zucchini to destroy the cellulose.