CrystalClear Premium Goldfish and Koi Food is designed for year-round feeding to produce maximum growth, color enhancement and vitality. CrystalClear Premium Goldfish and Koi Food is the result of years of laboratory and extensive field research and development with top Koi and Goldfish breeders. CrystalClear Premium Goldfish Food offers a premium blend of vitamins and minerals specifically designed to increase color, growth and vitality in all Goldfish species. CrystalClear Premium Goldfish and Koi Food contains high levels of Stabilized Vitamin C and Capsanthin (Natural Pigment) to assist with increased color vibrance and vitality. In addition CrystalClear Premium Goldfish Food is nitrogen flushed for maximum freshness. CrystalClear feeds are one of the only feeds that are nitrogen flushed to increase shelf life for up to 10 years. CrystalClear Premium Goldfish Food is manufactured in the U.S.A. so it hasn't been sitting on a slow boat from Asia for a month before it gets to the U.S. CrystalClear Premium Goldfish and Koi Food isn't a glorified catfish meal like many of its competitors in the marketplace today. There is no corn, alfalfa or any starchy ingredients in CrystalClear Premium Goldfish and Koi Food that would have adverse effects on the fishes' digestive tract. This product contains wheat germ which is easily digestible and does not cause the fish to have inordinant amounts of fecal matter, which in turn keeps the pond cleaner longer. Winston Company, Inc. has lead the biological water treatment industry for over 25 years now by offering only the highest quality bacteria and enzyme solutions for municipal wastewater treatment, sludge treatment and pond treatment.