Fish lack L-Gluconolactone oxidase enzyme, which is responsible for the synthesis of vitamin C, and therefore to fulfill their vitamin C requirements from an exogenous source. Hence the dietary vitamin C supplementation is reported to enhance growth and immune response in fish. Formula C has developed using naturally occurred phytogenic substances which are fortified with Nucleotides, Antioxidants and Trace Minerals. This product will give the best results in intensive aquaculture ponds especially during summer season.