Pool filter balls made from polyester fiber for sand filtration systems. Designed to traditional filter sand, these filter balls provide deep filtration, easier handling, and simple maintenance. Key benefits Effective deep filtration: Fiber structure captures fine particles for clearer pool water and improved overall filtration performance. Durable and elastic material: Polyester fibers resist compaction, retain their shape, and maintain filtration efficiency over repeated use. Lightweight and easy to fill: Much lighter than filter sand, the balls are easier to add or remove from sand filters and speed up service tasks. Reusable and machine washable: After use, place the balls in a laundry or wash bag and clean them in a washing machine for quick reuse and reduced rinsing frequency. Compatible with sand filtration systems: Designed to work in place of sand in standard pool sand filters without modifications. Simple installation and low maintenance: Compact and lightweight design lets you insert the balls into the filter housing quickly; routine cleaning keeps them performing well. Reduces need for additional treatment: Improved particle capture can reduce reliance on flocculants during regular maintenance. Product attributes Material: polyester fiber filter balls for filtration use Function: deep particle capture, preventing clumping common with sand, maintaining water clarity Performance: retains porosity under use, reusable after washing, and easier to handle than sand Practical applications Backyard pool sand filter replacement: Use filter balls to convert a sand filter for finer filtration and faster maintenance. Above ground and in ground swimming pools: Improve water clarity and reduce filter downtime during regular cleaning cycles. Aquariums and small ponds: Use in compatible sand filtration systems to capture fine debris and support routine tank or pond cleaning. What you get A practical, reusable filter media option that simplifies filling and maintenance of sand filtration systems while improving filtration consistency and reducing cleaning effort.