How to construct a closed loop on a non-drilled Tank?

[superswimmer]

How would i exactly go about doing this? Granted the pump has not been chosed yet, but i would like some advice/ diagrams/ pics/ ets. This would be for a 46gall bowfront. With 5 inches bak wall space.

[Nikkoli110]

This is the best I've seen on an undrilled tank. Nice pics and desription.

http://www.melevsreef.com/closedloop.html

His site is awesome, very helpful. :)