Bestway Flowclear Sand Filter, 2,000 Gallon Recommended for above ground pools 18 ft. and larger Uses sand/silica to filter water (not included); No need to replace filter cartridges. Easy access assembly makes service simple Corrosion proof filter tank with strainer for separating leaves & debris Top flange clamp design allows 360 degree rotation for easy installation Pumps 2000 gallons per hour; includes a 6 position valve for easy control