Refugium and sump

[Sushiman]

Here is what I'm looking at for my next sump, now you saw the set-up I currantly run, I want to clean it up.
Overflow from display into chamber #1: this will house my skimmer. I want to skim before the refugium so I don't reduce any critters trying to migrate from the sump to the display.
Water flows through a baffle to chamber #2: refugium + heaters: deep sugarsand bed mixed with a layer of mangrove mud. Live rock, greens, peppermint shrimp, etc.
Water exits through another baffle to the main pump return. great place for carbon as required.
I'm planning to have Canreef build me this one. plumped for an external return pump. I'm going to take my currant return pump (a Mag 7) & make a closed loop system with a "squid" director/wavemaker from J&L.