hey fatman, I would be happy to send you some montis if you want to cover shipping. as for the overflows, I originally wanted a overflow built off the back of the tank. but it became an issue for other things so it is an internal overflow I just had centered in the back of the tank. as for bulkheads, I had the overflow drilled with 4 hole for draines. I plan on reusing my seaswirls as my sump returns. and the two large bulkheads in the back glass are for a closed loop. I am using a ocean motions to operate my closed loop. I will have two bulkheads in the bottom glass in each front corner,(which I was torn about but did it anyway) and am planning on using ocean motions ratcheting returns dropped from the canopy into the top of the tank, and maybe a few returns dropped behind the rockwork, Im kinda waiting to finalize the closed loop returns till I do my aquascaping and see where I need the most flow. Yes those are large strainers on the closed loop bulkheads. I wasnt really sure what to use to keep debris out of the system as the oceanmotions are sensative to debris. you know of anything better? Im open for advice on anything with this new tank, I like input from experience.