Super Metal Eliminator & Stain Preventer will capture metals released from stained surfaces treated by REGAL® Stain Out/Super Stain Out or REGAL® Copper & Scale Out. The cartridge will prevent surface staining and water discoloration from stray metals in pool water. To keep water free of discoloration and surfaces stain-free, replace REGAL® Super Metal Eliminator & Stain Preventer cartridges every 4-6 weeks or when the contents become hard. REGAL® Super Metal Eliminator & Stain Preventer will remove common troublesome metals like copper and iron but also metals that come in via source water, weather, natural stone run off, pool products, or environmentally induced like nickel, silver, manganese, and lead. Maintain use of REGAL® Super Metal Eliminator & Stain Preventer in pools with constant metal issues from staining, well water, reclaimed water, or degraded heat exchangers.