Blackwater Creek Max Growth Koi & Goldfish Food is formulated to grow and maintain your fish in top condition. A high protein, floating meal-based diet with ingredients designed to be the primary diet for your fish. It is designed to grow your fish to the max! The Max Growth diet is the staple diet used by one of the largest Koi suppliers in the USA. It contains absolutely no fillers, and is designed to grow Koi and Goldfish. Try it and you'll be hooked!