FilterBalls™, Minis, Single 1/2 Cu Ft Bag, 15 Microns : Minis-1

FilterBalls™, Minis, Single 1/2 Cu Ft Bag, 15 Microns FilterBalls is a lightweight high performance filtration media, engineered to replace sand in your residential pool, industrial, or commercial "sand type" filter systems. No more aggravation and mess, just a one cubic foot bag of FilterBalls media replaces and outperforms 100 pounds of sand. Replaces 386601,