Sunwinx 3.6lb Pool Filter Balls, Sand Filter Balls for Swimming Pool, White — Open-Box, 21% Off

2026 Upgraded Sand Alternative: These 3.6 lb pool filter balls for sand filter are designed to replace about 120 lb of traditional pool filter sand, offering a lightweight and cleaner alternative for pool filter systems. No heavy sandbags, dusty sand handling or messy changeouts around your family pool area, just easier, more convenient maintenance for pools used by families and pets.

3–5 Micron Fine Filtration: Made with soft, non-toxic polyester fiber and a 98.5% porous structure, these white sand filter balls help capture fine dirt, dust, hair, leaves, cottonwood pollen and small floating debris. The 3–5 micron filtration design supports cleaner-looking pool water when used with the right amount of filter media and proper pool chemistry.

Washable, Reusable & Cost-Saving: Setup is simple, just remove old filter media, clean the filter tank and place the pool filter balls inside to start a new filtration cycle. These reusable pool balls for sand filter can be rinsed or machine-washed gently in the included mesh bag, then dried and used again to help reduce replacement frequency, maintenance time and long-term pool care costs.

Smooth Flow & Less Pump Strain: The high-porosity fiber structure of these polysphere pool filtration balls allows water to pass through smoothly, helping maintain better circulation compared with heavy compacted sand. The standard 2-inch ball diameter helps reduce clogging risk and pressure buildup when properly loaded in a compatible sand filter system, making backwashing and routine maintenance easier.

Wide Pool Filter Compatibility: These pool sand filter balls systems work with most standard sand filter pumps for above-ground and in-ground pools. They can also be used as auxiliary filter media for pool vacuums, skimmer baskets, aquariums, fish tanks, ponds and water features. Check your filter size and use the recommended amount for best results.

S-Filter Balls-White-3.6 LBS