Hikari Saki Colour Enhancing Diet is a professional use daily diet for Koi offering aggressive color enhancement. - A formulation offering a specialized blending of the finest proteins carbohydrates amino acids and fats offering improved growth and desirable form. - Rich in pure-cultured Spirulina and higher levels of Zeaxanthin offering vivid color-enhancement of the Hiban (red areas) with no negative impact on the Shiroji (white areas). - Includes a probiotic Hikari Germ. This unique beneficial bacteria overpowers bad bacteria within the intestine reducing it\'s propagation and ability to lethally infect your fish. Additionally the proprietary Hikari Germ accelerates the digestive process thereby improving absorption and thereby reducing waste output. - Improved water quality and reduced filter maintenance when used as a daily diet. - Improved luster reduced fatalities and fat- deposit-free growth as a result of the perfect ingredient balance.