Tetra Pond Koi Vibrance Floating Pond Sticks Clear water formula Size: 3.08-Pound Tetra Pond Koi Vibrance Floating Pond Sticks are a highly nutritional diet. That bring out vibrant reds and yellows on Koi and ornamental golfish. Feed in spring, summer, or fall, when water temperatures are 50 degress F and above. Enhances reds and yellows. Floating soft sticks are easy to digest.