17K gal. inground pool. Swapping old de filter for new sand filter. 1 company suggested 220 t filter with 52 gpm while the 2nd company suggested 244 t with 62 gpm. I don't know the current flow rate, but the de filter has 36 sq ft of filter grids and a 3/4 hp motor.
Will the larger 244 t sand filter work, be better than the 220 or will it do harm or be less effective than the 244?