I have a 16x32x4 rectangular frame pool, 17k gal. Running a 4200 GPH pump. A friend is getting rid of their Intex SWG, thought I might buy it for $50, but I notice it is only rated for flow up to 3000 gph. I don't know much about these units, so I am wondering if there is any way it would work with a stronger pump like mine. Thanks!