Sera koi royal staple diet enhances the growth and wellness of all young and growing koi it is ideal for feeding throughout the whole year as it is very easy to digest the well balanced share of natural minerals trace elements and additional vitamins enhances the natural resistance and the vitality of your koi various healthy herbs vitamins and the natural carotene of valuable spirulina algae promote rich coloringsera koi royal is low in fat and thus especially easy to digest and ideal fo