Tetra Pond's Koi Vibrance is a highly nutritional diet consisting of floating sticks that are easy to digest. The formula is designed to bring out vibrant reds and yellows and ornamental Goldfish. Feed the fish with Koi Vibrance in the spring, summer, and fall when the water temperature is above 50°F. The sticks are soft and easy to digest, keep the water clear, and can be used on fish of all sizes. For more information on this and other pond products, contact the pros at PoguePoolSpa.com. You can also give us a call at 1-866-739-5658.