Koi Breeder Preferred. The Perfect Diet For Lower Temperatures. Saki-Hikari Multi-Season is the perfect diet for feeding at lower water temperatures. The combination of easily digested ingredients, including the inner most portion of the wheat-germ kernel and its naturally high concentration of amino acids and vitamin-E, and the added beneficial living microorganism provide outstanding digestive properties. This diet offers uniquely balanced nutrition for growth and carotenoids for superior color enhancing capacity and can be fed in water temperatures as low as 50 °F. The inclusion of stabilized vitamin-C helps support immune system health.