Aquascape's professional-grade Biofalls® Filters provide the most filtration and highest water flows on the market. Durable rotational molded polyethylene ensures maximum strength and withstands whatever Mother Nature can dish out. The Signature Series™ 2500 Biofalls® includes a 21.5" spillway, dual 2" bulkhead ports and filters ponds up to 2,500 gallons and accomodates flow rates to 5,000 gal/hr. 29.5"W x 24"D x 20"H