Stain removal chemicals are used to remove stains, scale, discolouration such as rust and cloudy water caused by metals and organic contaminants in your pool water. DiscountPoolSupply’s sequestering agents are designed to help your filter remove these metals and keep your pool clean. Chemicals such as Metal Free helps protect against staining from metals such as iron and copper without raising phosphate levels in your pool water. We also offer a selection of products that will remove existing stains on pool surfaces such as concrete and liners and to prevent waterline build-up. DiscountPoolSupply has everything you need to keep your pool clean and beautiful.