Stress-Free Pool Care True to its name, U.S. Silica's Mystic White II works wonders for pools above ground or inground so great that it may as well be magic. A sack of 50 pounds worth of specially made swimming pool sand, graded and washed for your use, will give you and your sand filter pump more cleaner pool fun time for less inconvenience. Debris-Free Water Mystic White II's angular particles efficiently capture debris like leaves, moss, gum, and insects, preventing filter clogs and ensuring consistent, crystal-clear pool water. Plus, it's a safe choice for all types of pools, be it public or private, catering to schools, communities, homes, and clubs alike. Effortless Pool Maintenance Odorless composition ensures it won't leave unsightly stains or corrosion on your pool's surface. This means you can enjoy your pool with pristine water and minimal maintenance. When paired with your pool sand filter, these 50 pounds of sand work like magic, taking the cleaning burden off your shoulders.