Wow now I really feel proud of myself to have a professional person say that about my stand dang....
Well I seen these thin back boards you're talking bout too at the store, but I figured I rather use ticker wood on everything then to thin stuff all around for the cabinet (rather to big boards and it withstand a earthquake then thin stuff and it breaks under the tank right!?).
And really like I said, I never used saw's or routers etc before in my LIFE and I have much LESS idea how thick boards would have been structurally sufficient
Biggest reason I like it apart from its looks, it matches the rest of my office (all natural untreated wood shelves and desk).