Spa Choice 472-3-1001-02 Metal Free Stain Remover for Spas, 1-Pint, 2-Pack
Brand: SpaChoice
Metal Free is a sequestering agent that prevents metal staining and corrosion in your spa or hot tub
Metal Free also prevents scale build-up
Spa Choice Metal Free keeps iron and other metals from oxidizing, which can cause staining to the spa's finish
Downloadable User Guide Available Under Product Information: Technical Specifications