Working on it.
BUILD THIS NOW!
Bought a few things just now at drsfostersmith.com:
2x Koralia nano 425's - $23 each (sale FTW!)
Reef Crystals 200g salt mix - $54
80lbs Tahitian Moon Sand ($1/lb, only ~40 is for this tank, the other is for my big reef)
Also bought a glass 40mm (1.57") drill bit from Amazon for $5.34 shipped
Brings total spent to $360 so far.
I also made a s!@# list of, well, you know, s!@# left to buy.
Bulkheads/plumbing misc - $45 (this includes if I want to drill for a return on the top tank instead of a lily pipe like I'm considering now)
Custom LEDs - ~$130
Mounting for LEDs - ~$30
Sump - hoping for a $/gallon sale soon for a 20g or so
It all starts adding up fast! Gonna go to home depot tomorrow and see what they have as far as fittings go to attach to the bulkheads. I think that instead of hard-plumbing with PVC that I could convert to 3/4" tubing insert fittings and just run those into the sump. This would allow me a bit of flexibility as I'm not sure if the sump will need to sit right there or in a slightly different spot. Both drains will be redundant, two 3/4" bulkheads on each tank drain.
Also toying with the idea of having the tanks side-by-side instead of front to back. Would allow me to not have the rear tank be so much higher than the front tank, and would make lighting much, much easier. I'd still have the bigger tank elevated, but maybe only by 6" instead of 12". Will get a Google Sketchup design going. All this has to be figured out before I drill the tanks.