My Epidendrum criniferum has been suffering since Christmas.

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I have had it for about a year. It was outside in a shade house last summer and did well. This past October, it moved into a light house in the basement (temps between 60 and 75 and humidity between 40 and 50%). It was under a 200W CFL when the leaves started to turn yellow and then red. In case it was caused by the light, I moved it to a spot under 4 40W bulbs instead. It was misted 2x a week during for 2 weeks at Christmas when we were out of town; otherwise it gets watered once a week. It doesn't seem to have any bugs--mites, mealy, or otherwise. One new growth is visible and the roots appear to be healthy.

Any ideas about what might have caused/be causing the color change and pock marks on the leaves would be greatly appreciated! I'd like to avoid any further suffering--for me and the orchid!
FloraStar