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Potassium Permanganate is a powerful disinfectant, oxidizer, and regeneration media for greensand iron filters from Pro Products. This potent and granular product is formulated for regenerating greensand in greensand iron filters, breaking down iron so it can be trapped by the filter and prolong its lifespan. The versatile solution also oxidizes other contaminants like manganese, odor, taste, and color, making it ideal for a variety of water treatment applications. Manufactured in the USA by Veteran-Owned Pro Products, this 28 oz bottle offers excellent value and effective performance, ensuring your iron filter operates at peak efficiency with every use.