OK, becuase i have to move some stuff around and i want fix my sand bed and my tank i moved everything to a spare tank.(2 clowns/anemmone and a tang) everything is happy and working with them. I am going to drain my DT into another tank to save as much water as possible and while itis empty im am thinking about drilling for overflows. I kno how to drill the tank but im confused on placement and piping. I noticed RR tanks are drilled in the bottom with a bulk head and a pipe, and iv seen tanks drilled on the side with a overflow box in front. Which is better? i have a 125g DT and a 55g sump/fuge, my return is a mag9.5. I currently run 2 1" diy pvc overflows and a 1" return everything works fine but its loud and ugly. please LMK what you would do. TIA