Very good point, and true of most plants, I'm always telling my customers this at the nursery. The vanda was sprayed with tap water that was allowed to sit for 24 hrs and the chlorine could evaporate off. Than we stopped doing this and I noticed that the roots got very brittle, like they were being dried out by something, but we didn't figure out how. They got so brittle that they lost their flexibility and broke very easily. So we switched to rain water and the plant continued to look unhappy. Then a vanda grower up here said that she potted hers and they did very well. So we did this and it is starting to send roots out into the new mix (coarse fir/perlite/charcoal mix). The leaves are still too thin, but it has stopped getting worse and it's starting to regrow leaves. So hopefully. It has lots of air movement too, so I find that it dries out everyday. We'll see how this works in the winter.