Finally got around to reading this thread and happy I did tol. Great read, great tank, truly inspirational stuff. So well planned and good to see that it's the result of many years of experience of finding out first hand what does work and what doesn't.
There's only one skimmer on this system? That's pretty amzing in itself but I'm sure adding another is somewhere in teh design if it's needed down the road.
Love the PVC racks because I'm doing something similar myself but putting flow through them and using them to keep the area under the racks clean. I'm just counting on the LR hiding the rocks though. I wish I could do the styofoam and epoxy method but that is something the language barrier will make sure never happens (
). Maybe I'll just paint them brown, black and purple.