Keep your pool water clear, clean, and inviting with the HydroTools™ .9 THP, 2940 GPH Sand Filter System. Designed for efficient filtration and easy operation, this system uses specially graded filter sand to trap dirt, debris, and fine particles as water circulates through the tank. The result is consistently cleaner water with minimal maintenance. This system is for use with above ground swimming pools including Summer Escapes, Polygroup, Summer Waves, Heritage, Swim 'N Play and other inflatable top ring styles, frame style and rigid wall style pools.