REVICOAR 4.6 lbs Pool Filter Balls for Sand Filter Pump, Reusable Efficient Pool Filter Media Balls for Swimming Pool Sand Pump, Replace 150 lbs Pool Filter Sand, Lasts for Several SeasonsBrand: REVICOAR Color: White Features: New Upgraded Pool Filter BallsThese pool filter balls are a perfect replacement for traditional pool filter sand, they are lighter, more environmentally friendly, more efficient and last longer. What's more, these filter balls won't clog your filter and there's less backwashing for maintenance. Pool filter balls will make cleaning and maintaining your pool a breeze(4. 6 pounds of filter balls are equivalent to