Additional Description

Multiple units can be hooked together to accommodate any size aquarium or pond. The 318 uses 205 sq ft of 50 micron polystrand filter pads. The top and bottom pads have smooth edges and the center ones have notched edges. A mechanical unit, such as the Ocean clear 317, 325 or 340, should be used in line prior to this unit. Use an external pump with a flow rate of 500-1600 gph. The manufacturer recommends using a pump at the higher end gph, especially if using more than one unit in tandom. Inlet and outlet size is 3/4". Filter body, lid, gray thread ring, media and parts pack. Parts pack includes: 1 drain valve with garden hose thread outlet, 1 3/4" x 3/4" straight adapter, 1 3/4" x 3/4" elbow adapter, 5" piece of 3/4" ID vinyl tubing, 2 speedy clamps, 1 vent plug with o-ring for lid and 1 pipe plug with o-ring.

Description provided by the manufacturer or retailer