Red Flint Sand and Gravel water filtration media is a naturally clean filtration media found in Eau Claire, Wisconsin, the land of clear water. Our filter media is useful for applications such as pool sand and filter sand. Red Flint specializes in custom grades of sand and gravel to meet your stringent specifications. The glacial deposit media has an increased surface area that provides better particulate holding capacity, thereby: * Improving particle removal while still providing maximum water flow. * Allowing for deeper particle bed penetration. * Increasing filter run time. General Properties of Red Flint Water Sand and Gravel Filtration Media * Sub-angular shape provides for maximum turbidity entrapment. * Less than 1% acid soluble impurities prevents mineral leaching deterioration. * Washed, kiln dried, and screened to meet exacting specifications. * High quality silica sand and consistent uniformity.