Tetra Pond Spring & Fall Diet Wheatgerm Sticks is a highly nutritious food for koi and all pond fish. This high quality wheatgerm food is extremely easy for pond fish to digest and forms a highly nutritious diet which will stimulate growth and fertility as well as ensuring your fish are kept active and healthy. It is the ideal winter food which provides excellent digestion even at low temperatures thereby reducing water pollution. Feed in spring and fall, when water temperatures are below 50 degrees F and above 39 degrees. Shipping weight: 4 lbs.