High quality Refugium filter with unequalled value Includes a 2x32 watt Compact Fluorescent Light for the Refugia area First Compartment is 12" x 15.5" to fit large in-sump protein skimmers. 2 x 1" threaded inlet and 1 x 1"outlet (for external return pump) Has additional 3/4" threaded bulkhead for submersible return pump Rated 225 gallons High quality cast acrylic construction 3 year warranty Dimensions: 36L x 16"W x 18"H Shown with optional Mag Drive 1200 Flow rated to 1500gph