Eccoflow 300 - 85751. Eccoflow 500 - 85752. Eccoflow 600 - 85754. Eccoflow 1000 - 85756. Eccoflow 1500 - 85758. Not only does the food provide the beneficial probiotic bacteria for Koi but it contains a food for the beneficial bacteria too in the form of a prebiotic (fructo-oligosaccharide).
eBay