Check the listing for details. Formula 41 Premium Bulk Koi Food - 10 pounds. Condition: New. Listed at 41.99 USD. Formula 41 Koi Food - 10 Pounds Formula 41 is a high quality protein enriched Koi food. It is highly digestible and packed with essential vitamins and minerals to keep your fish healthy and strong. Contains no corn meal or other cheap fillers often used in lower grade foods. While corn fillers do not harm the fish, they are not as easily digested and often result in increased solids in the water, placing higher demands on the filter. Using a high quality food will lead to healthier fish, cleaner water and reduced fiter maintenance. Feeding Directions: Feed only as much as the fish will consume in 10 minutes. Feed twice daily. Guaranteed Analysis Crude Protein (min) 41.00% Crude Fat (min) 8.00% Crude Fiber (max) 3.00% Crude Fiber (max) 4% Vitamin A (min) 9,000 IU/kg Vitamin C (min) 150 IU/kg Vitamin D (min) 2,400 IU/kg Vitamin E (min) 110 IU/kg Ingredients Fish meal Dehulled soybean meal Wheat flour Wheat germ meal Gluten supplement Fish oil Brewers dried yeast Vitamin supplement A Product of Missouri, USA