For my 220 I had built a sump out of a 55gal. It had 2 corner overflows and I plumbed 2 mag drive pumps, one for each corner return. You can customize your flow with the pumps, and they dont even have to be the same size. I think I had a 750 and a 900. A filter sock for each overflow and fill it with bio-balls and youll have plenty of filtration. Mine was 72x24x31 if I remember correctly and 31"tall is a PITA to work in, if you want to change one little thing than you need to take your shirt off and get your shoulder in the water. But once its set up how you like it, talls look so nice. T5hos worked fine for me, I just needed more tubes than I had.