Potassium Permanganate, Pot Perm, Removes Iron/Manganese, 28 oz Bottle, For
Potassium Permanganate, Cleaner Functions Restores Softener Back, Container Size 28 oz, Container Type Bottle, For Use With Greensand Iron Filters, Mix Ratio 8 oz per 1 gal Water, Removes Iron, Manganese, Series Pot Perm.