Koi food contains spirulina and other natural marine ingredients to enhance the vibrant colors of your pond Koi and goldfish. This diet is formulated with stable vitamin C and brewers yeast to help improve immune function and promote healthy tissue development. This is a large pellet that is suitable for medium and large koi and goldfish. Protein 28.0% Crude Fat 4% Crude Fiber 3.5% Pellet size = 5.0mm Pond Pellet Food - Large Koi 1 lbs. PPK1 Pond Pellet Food - Large Koi 4 lbs. PPK4 ponddepot@msn.com Copyright - All World Rights Reserved Pond bacteria, Pond Kits and Pondless Waterfall kits, Filter Pads, Underwater Pond Lights. pump replacements and pond algae control. Pond Depot provides excellent technical assistance and fast shipping for all orders. The staff at Pond Depot are highly trained and experienced in installing and maintaining ponds. We will gladly answer any questions that you have. Pond Depot your online pond superstore!