Lifegard Aquatics Compact Pre-Assembled System Includes: Quiet One 4000 High Head Pump (980 GPH), AF 94 Mechanical Filter, AF 93 Chemical Filter, AF 92 Heater Module, and QL 15 UV Sterilizer It also includes the Complete Customflo Water System Kit; Assemble parts in multiple ways to create desired flow patterns Union Shut Off Valves and Power Drain also included All Lifegard Mechanical, Chemical, Heater, and UV Sterilizers include 3/4-inch threaded reducing bushings if threaded installation is desired