Pro Products Pot Perm Plus Catalog Home Water Softener Salt Pro Products Pot Perm Plus Description Designed for greensand iron filtersStrong oxidizing agent for dissolved iron and manganeseHelps convert contaminants into filterable insoluble oxidesRegenerates and oxidizes greensand filter mediaHelps restore the exchange capacity of the unitSuggested use rate is 2-4 ounces per cubic foot of filter mediaCan be added dry or mixed with water as a solutionEight ounces dissolves in one gallon of water at 68°F Rates Please contact us for current pricing and availability.