microbe-lift wheat germ contains stabilized vitamin c and probiotics that produce enzymes to help break down carbohydrates, protein and fat. in cold weather during spring and fall when the nighttime temperature goes below 55 f (13 c) feed the cold weather formula. when the pond water's temperature drops, the fish require a highly digestible cool-water diet. the cold-water diet is made with lesser amounts of protein but contains wheat germ, which is easily digested and also contains a higher level of fats. microbe-lift wheat germ is one of the best autumn/spring koi foods available.