Sakrete Pool Filter Sand is a washed, dried, and graded silica sand designed to be used in sand filter systems for above ground pools, inground pools, or hot tubs. This filter media is ready to remove all of the impurities from your pool’s water. This product is capable of really keeping a person’s swimming pool nice and clean. It comes in 50-pound bags that are easy to pour and easy to use, and they are always ready for use. This filter media does a fantastic job of filtering dead organic components and other forms of sediment out of swimming pool water.