ok i acquired a new setup today that i want to change the overflow setup on. i have a 90 that has a single hole in the top left and it has a piece of acrylic put in the corner as a overflow. i want to have a actual overflow box made for it because i have been told that that is the best way and the most quiet. i have had factory drilled tanks but they have always been drilled on the bottom and used standpipes in the overflow, i have seen a few ways to do the pluming on the outside of the tank what do you all recommend??