Hello Everyone . I'm setting up my first reef tank , an IM 75 EXT , that came with a 2650 gph dc return pump and would like to run a second pump. I was thinking about running one pump to each return with a shut off valve between them. First question; is this a good way to go about doing this? Second question; would a second 2650 gph dc pump be too much for this tank , even turned down?