The buildup of minerals on your pool plaster and pool tile is known as scale. The most common swimming pool scale is calcium buildup. Calcium buildup can harm pool plaster, pool tile, and causes havoc with your pool equipment, if you have a salt chlorinator it can damage your salt cell. Besides brushing you can use safe chemicals treatments such as Beautec, to prevent scale buildup as well as removes stains from your pool plaster and pool tile. Salt cells provide a warm alkaline environment, which attracts calcium. If you have a salt cell it will not turn on once your swimming pool water reaches 60 degrees Fahrenheit therefore, we recommend you replace your salt cell with a dummy/pass-through cell, you can remove this calcium build up out of the equation.