Don't mean to hijack, stoli probably won't mind though.
It's a 4x2x1 truvu coral flat (very reasonably priced, IIRC w/ return plumbing it was <$400); custom coast-to-coast overflow into 48" MRC Bio-Sump (very unreasonably priced, but beautiful and I wanted a quiet open stand design).
Sealed filter sock chamber leads into bio-media chamber (You guessed it, man made rubble with acres of surface area! made by MRC but I'm sure it's the same stuff that BRS sells)
The sump has a nice big area for filtration. I have two NR MR1's to add once the system is cycled, and I still need to hookup the BM doser. Running the DCS200 and DC3500, and two WP40s controlled through VDM on the Apex (Mistakes were made! Should have got the double-wire instead of two singles!) I think that's it!
Hoping to growout some good looking sps