re the sump, will the middle compartment be a refugium or will you have bio media in there?
earlier you mentioned cannisters with media (and I'm guessing greater flow rates) so I assumed refugium here. If so, what flow rates are you thinking about?
Correct the middle sump area is for a refugium. Going to experiment with reverse light cycles, see if I can keep night time O2 levels up. It could also act as an isolation, but not a full quarantine area if I ever needed to get a fish out of the main tank for a short time.
Flow through the tank/sump is planned on being 4x/hr - so that should be about 1200 gph.
If I had 1/2 your patience I would have spent 1/4 of the amount of $ I have on botched projects.
I've done enough tanks to have learned my lesson, especially on a tank this large.
I was just going to "wing it" and try and start building the cabinets (I'm not a wood worker), but figured it would be better to have an actual build design pre-done to catch any flaws or clearance issues.
I figure I will sit down and model the entire pump room in SketchUp, to make sure my pipe routing plan will work too.
Everything is exactly to scale