NutriDiet Tropical Flakes are formulated to provide all essential nutrients for all tropical fish. As with all of the Seachem NutriDiets, Tropical Flakes have Chlorella Algae as an exceptional source of a broad range of vitamins, amino acids as well as all other nutrients required for animal life. Chlorella Algae is considered a potential super food that far surpasses the nutrients delivered by Spirulina Algae common to other diets. Additionally, Tropical Flakes contain GarlicGuard as an appetite stimulant.