The Eshopps R-200 Refugium is a high quality sump style refugium. The R-200 features a built in micron filter bag for mechanical filtration; a compartment for a protein skimmer or media reactor; a large center refugium for housing macroalgae; livesand; liverock; coral frags or other animals. Each unit includes 1" bulkheads and 3 ft. of 1" flex hose for attachment. Unit has an volume of 30 gallons; and is rated for aquariums up to 225 gallons. Dimensions: 30 in. x 14 in. x 16 in.