Designed to enhance the quality of Pool Surfaces, Equipment and Salt chlorinator cells by protecting them from both Calcium and Magnesium type scale in addition to metals. AquaPure Scale Remover & Metals Inhibitor in regular maintenance is easy to apply and only needs to be added once every 3 months to your pool, both assisting in the removal of existing scale and preventing the build-up of scale from pool walls, equipment, and pipes.