Reverse Osmosis

Highest quality potassium permanganate (Pot-Perm) for greensand iron filters. It does an excellent job of maintaining the performance and efficienty of the system. You receive 6 - 5lb bottles for the price. A cost effective solution for your water treatment needs. This product by law is required to ship as a hazmat product, which means there is a fixed shipping cost of $39.00 for the 6 pack. This is one of our biggest sellers.