•Filter is designed to be installed outside the pond, which allows easy access for maintenance
•Filter features an efficient 3-tiered filtering system that provides complete mechanical and biological filtration
•Top tray houses pumice filter material--included--which provides mechanical and biological filtration
•Below the top tray, a foam pad--also included--performs mechanical filtration
•Bottom tray is designed to hold the biological media of your choice
•Trays have convenient handles which allow you to remove them easily
•Ideal filter for ponds up to 1000 gallons
•3-stage filter unit features two lift-out trays with foam and lava rock for mechanical and biological filtration
•Third compartment is left open for your choice of material
•Also features a universal click-fit coupling, built-in drawplug, and two outlets for waterfall attachments
•Pump and tubing not included
•21"L x 15"W x 13"T