Im looking to upgrade to a 120gal in the future as i get more confident in my skills and i came across this listing for a 120 gal for $150! Great deal! My question is,while looking at the pictures it is pre drilled in both corners(circled in red) Are these where holes would normally be ddilled for sump? Or would they b closer together more in the center of the tank by the glass? Would this be the proper placements for inlet and outlet for a sump? Any suggestions???




