Thanks to Chris, Matt, Joshua, Steve and Tim.

For taking the time to reply to my post. Chris thanks you for chiming in and helping me explain. Matt I think this tank was meant for African cichlids, because why would someone drill the return holes back to the tank in the middle of the bottom glass. Plus the canopy that came with it is to close to the surface of the water. (Chris is going to help me built a new reef ready canopy)

Matt: as Chris explained on his post. It does have two holes in each corner for the overflow. And Chris has posted the size and description of what I have.
I am going to take out the middle bulkhead from the bottom of the tank (this one is not been used) and try to measure the diameter of the hole. I pray to GOD that you are correct about the measurements.

I have not bought a pump yet, because of the plumbing issue. I do not have any power heads yet, to create current. I will be getting some next year. I just want a pump that will handle what ever for plumbing, since it is going to have to be internal, it cannot get too hot, plus it has to be quite.

The pump I have right now with the old sump, I am using right now. It is a quite one pump (and believe me, it is super quite) but of course it is one of the first models and when it get too hot, it will turn off. So I have couple fans running over it and those are the only things you hear the two fans.

I do love my free 135 gallon show tank 72" x 18.5" x 25", but it needs a lot of work before it becomes reef ready. And as you all know, it is not cheap. i have a new euro-reef CS8-3 skimmer(which it did not have one) I had a brad new sump built 54" x 15" X 18". 21" of it is for the refuguim.

Next year I will be re-doing the lighting. Currently it has 2-175w MH, and 2-40W actinic. I am hoping to upgrade to 3 250 MH and VHO or T 5's.

I am also will be adding the tunze turbelle 6000 with the multi controller 7095 with the night sensor.

All this not cheap and I have a respect for all of you that have been doing this for a while and have multiple tanks. I really feel like a small fish in a big pond with way larger fihes like you all experts.

I am hoping to get some good answer and join the elite like you all our.

Thanks to all of you for trying to help this really reef rookie.

Thank you very much to you guys, who have answer me so far I really appreciate it from the bottom of my heart.

CD: I will be waiting for your call later. Tell Wendy that I have sent her 2 pm.

Anyway I hope to find answer on how to redo my plumbing problem. I need bigger plumbing at least 1.5" or maybe 1" to the sump and 1" or maybe 3/4" back to the tank. Only then I will know for sure what kind of new pump(internal (submerge) or external) to buy.

Thanks