The Pro Products KP02N is a specialty potassium permanganate-based regenerant formulated specifically for restoring the iron and manganese removal capacity of manganese greensand filter media. Sold in a 2 lb container, KP02N oxidizes the greensand bed so it can continue to effectively remove dissolved iron, manganese, and hydrogen sulfide (rotten-egg odor) from well water. Without regular regeneration using a product like KP02N, greensand media loses its oxidizing capability and iron will begin to bleed through into your household water.

Regeneration frequency with KP02N depends on your iron and manganese concentrations and daily water usage, but most residential greensand iron filters require regeneration every 1 to 4 weeks. A typical dose is approximately 1.5 to 2 ounces of KP02N per cubic foot of greensand media per regeneration cycle. Homes with high iron levels (above 3 ppm) or heavy water use may need to regenerate weekly, while low-iron applications can often go 3–4 weeks between doses. Always follow your filter manufacturer's dosing chart for exact amounts.

To regenerate your greensand filter with KP02N, first put the filter into bypass or backwash mode per your control valve instructions. Carefully measure the recommended dose of KP02N potassium permanganate crystals and pour them into the regenerant/brine tank or designated feed port. Allow the unit to complete a full backwash and rinse cycle (usually 20–30 minutes) before returning it to service. Always wear gloves and eye protection when handling KP02N, as potassium permanganate is a strong oxidizer and will stain skin, clothing, and surfaces purple.

KP02N is manufactured from technical-grade potassium permanganate (KMnO₄), which is the industry-standard regenerant for manganese greensand filtration and is NSF/ANSI Standard 60 certified at the ingredient level for use in drinking water treatment. It is not intended for direct consumption—it is used only to regenerate the filter media, after which the bed is thoroughly rinsed before any treated water reaches your tap. Store KP02N in its original sealed container in a cool, dry place away from children, pets, and combustible materials.

A single 2 lb container of Pro Products KP02N typically provides between 15 and 30 regeneration cycles for a standard residential 1.0–1.5 cubic foot greensand iron filter, which often translates to 6–12 months of service for an average household. KP02N is compatible with virtually all manganese greensand and greensand-plus iron filters, including Pro Products iron filter systems and most aftermarket greensand units that call for potassium permanganate regeneration. It is not intended for use with air-injection, catalytic carbon, or Birm-based iron filters, which use different regeneration methods.