The Filter-Flo's were huge water hogs. GE didn't change their design very much when they went from the solid tub to the perforated tub. So the FF machines fill the fixed and anchored outer tub, while the perf tub had plenty of room to rock about in the cavernous space. Other manufactures made the outer and perf tubs in one moveable unit, so that there was usually an inch or less space between the outer and perf tubs. With the GE, there is 2-4 inches between the outer and perf tubs, with even more room at the bottom. HUGE water hogs!!!