I like the layout!
Is your tank hanging over the edges of the stand there? Maybe it won't be a problem for a 12 GL, but from what I've read, rimless tanks need to be fully supported on the bottom.
I plan on getting one of these in the future. I love the panorama it creates.
"I am rarely happier than when spending an entire day programming my computer to perform automatically a task that it would otherwise take me a good ten seconds to do by hand." DOUGLAS ADAMS, WRITER