Magnetic Drive - Quiet - Cool Operation - Long Life Iwaki is one of the most dependable external pump on the market, well know for it's excellent quality. We carry the Japan motors (MD series). They are slightly more then theWMD american models, but pump is a little shorter and they ren cooler. So we feel it's worth the extra money. Some of the larger pumps will need a pig tail added to powercord. Iwaki MD 40RLXT - 1080gph at 6 feet head pressure -Max head 15.4 ft. inlet/outlet 1" made in Japan Note - IWAKI RLT are Pressure Rated pumps designed to pump into pressure canister filters or any situation that can create back pressure. IWAKI XT models are for standard circulation such as return from wet/dry. The pressure models are also suitable for standard return.