Nijikawa Professional Koi Food. 20KG, 7 MM sinking.
This professional koi food provides optimal protein and fat ratios, enhancse the digestive process, stimulates metabolism, strengthens the immune system, improves skin quality and maintain coloration.
You will notice your water clear up, your koi will be more energized, and you'll notice a positive change in your koi's coloration (deeper blacks, brighter reds, etc). We know because this is what we at SelectKoi.com use!