Aqua Master Staple Koi Food Enriched nucelotide enhances koi immunity Balanced nutrition spurs growth Coated with Bacillus Subtilis natto to facilitate digestion and reduce water contamination; 1/8-Inch Enriched nucleotide enhances koi immunity Balanced nutrition spurs growth Coated with bacillus subtilis natto to facilitate digestion and reduce water contamination; 1/8-Inch Coated with Bacillus Subtilis natto to facilitate digestion and reduce water contamination; 1/8-Inch