Blagdon Minipond Filter 4500 UVC is a compact and effective complete water garden filtration system. Low maintenance, unique 5 stage filter design. U. V., graded foams, biomedia and polymer carbon cartridge. Integrated UVC clears green water. Hinged lid allows easy access for cleaning. For ponds up to 4500ltr / 990 gal. Maximum flow rate 2250ltr / 495 gal. Multi hose tail inlet and 1 1/2\" outlet. High output power 5w UVC. For more information on the Minipond 4,500 Pond Filter or any other Blagdon Pond Filters call us and speak to one of our Aquatics specialists who will be happy to assist you with your purchase.