Pro-Pot Perm Potassium Permanganate
|   ||Pro-Pot Perm is a strong oxidizing agent. It converts dissolved iron and/or manganese into insoluble oxides which can be easily removed by filtration. Pro-Pot Perm regenerates and oxidizes greens and iron filter media. While there are many methods of introducing permanganate to the filter one method is to make a solution and apply automatically or manually at regular intervals.
Manganese Greensand Systems