Bulkhead Size for new nano???

[Jeremy B.]

I just picked up a new show tank for my nano today. I'm currently using a ten gal. glass.........but it will soon be an acrylic 16.5" X 8.5" 12.5". I'm curiouis as to what size bulkhead I should have drilled in this? I plan on using the old 10 as a sump underneath it. Any recommendations? Also, should I make it a bottom drainer and corner off one of the back corners, or drill in on the back panel? Thanks for the info guys!

I've already posted this on the main board, but figured I'd get a few more responses in here. In addition to what I said above, I think I wanna end up drilling the back panel and running a 90* elbow threaded out of the bulkhead and turn it upwards to skim the surfaces of the water. Also, I planned on using a Mag5 for my return, pumping at about 4' of head. 300gph? sound right?

What do you guys think?