SeaKlear 90575SKR 1 qt Bottle Stain Preventer and Remover. Our Stain Prevention & Remover removes metal stains and scaling. It is a professional strength blend designed to remove and control metal-based staining on pool surfaces as well as water discoloration. Stain Prevention & Remover sequesters (picks up) the material causing metal stains and scale and holds them in solution. Dissolved metals and minerals and corrosion of metal pool fittings will often cause metal-based staining and/or scaling that can be treated with this product.