High quality Refugium filter with unequalled value Includes a 1 x 96 watt Compact Fluorescent Light for the Refugia area First Compartment is 12" x 17.5" to fit large in-sump protein skimmers 2 x1" threaded inlet and 1 x 1"outlet (for external return pump) Has additional 3/4" threaded bulkhead for submersible return pump Rated 300 gallons High quality cast acrylic construction 3 year warranty Dimensions: 42L x 18"W x 18"H Shown with optional Mag Drive 1200 Flow Rated to 1800gph