NG, I'm going to build a second one simular to the first, but I will put it outside on my patio so the &%&&& wind won't knock over my Sarracenias this coming growing season. Nothing annoyes me more that a horizontal tube!
Tony, I considered treating the pine, but was concerned about residual vapors causing problems, so I didn't. I will have had it set up for almost a year now and fortunately, have had no mold/fungus problems. As it's ventilated (has to be with the light fixtures inside) the humidity level never becomes saturated, and rarely goes above 90%, with an average of around 75%. I was also concerned about the humidity causing corrosion problems in the flourescent tube contacts, I check them regularly and so far have had none.