I know I should have done more homework to help me make this decision but I am kind of desperate. I want to buy a 120” long x 18” wide x 36” high starphire glass tank. My problem is I want to do a reef tank with a sump system and can’t decide on overflows or just holes drilled into the tank. The stand I’m building for it will leave both large viewable panels open but I am going to enclose the ends with a canopy on top. I want to either put overflows at the ends or just to drill holes in the tank but can’t decide which to do; also I’m trying to hide most of my plumbing in the ends to keep as much as possible out of site. I have looked around on the internet and can’t seem to find a info on the same setup . I have to get this ordered so I can have my living room done before Christmas. It probably will be awhile before I actually get the tank running just have to install it and build the canopy for it. When I get home I plan on doing some rigorous training just I’m stuck at work in the Gulf of Mexico and won’t be home before I have to order it.