Thanks for the input golfish, I really need to stop by and check out your tank sometime.
I have been really trying to avoid the closed loop setup if I could. I had a closed look a few years back when I had my old tank and I just had so many problems . I do see what you mean though about the OM being on the return, I won't be using the OM to its full potential. My main concern though is drilling my tank, I have done it once and screwed up so I am afraid to try it again. But if I did drill my tank I would drill 3 more holes for a closed loop. I even bought a brand new drill kit from GlassHoles.com, I just don't wanna screw up the tank.