Yes, I did all the plumbing, electrical, woodwork on this myself. Everything is handmade by me, except for the tank, which was designed by me and made to my specs. Tank alone cost $575.
Closed loop decision was easy.. wanted an SPS tank, so I needed flow, but also wanted a DSB in my display since I couldn't put one anywhere else. So, learning from lessons past, I decided on a closed loop. I decided to make a "floating reef" as the closed loop output, drill holes around the entire frame, stack the rock on that so gobies can't dig under the rocks, causing a landslide. I still have a little sand strorm now and again from my engineer goby spitting sand onto the floating reef, which makes a big "poof" of sand in the tank, but not too bad, and there is tons of flow in this tank.. very much pushing the limits.. which is a good thing.