Hi guys! I was examining the leaves on a phal I inherited from a co-worker which I recently brought home and repotted after learning that she wasn't getting enough light on my desk at work :P
Her leaves used to be extremely dark green and have lightened pretty well the last week. She has a very young leaf that has basically popped straight up, and I noticed it has some purple/black on its underside. The top is nice and green, it's only the underside. Does this mean its getting too much sun? The rest of the leaves are nice and green and seem quite happy. I have read that some hybrid phals have pigmentation, as well as those with pink buds..I've never seen this girl bud. She was dyed blue when my co-worker had her, so I can only assume she's actually just white. Is this leaf okay?
Second question: Her very bottom leaf has bumps all over it (thankfully this is the only leaf that looks like this so far), and on top it looks like a little chunk has been eaten out of it. Is this scale? What should I do if it is scale? Can scale be transmitted to other plants? I have one other phal that I am trying to nurse back to health, and the orchids share a baker's rack with a couple African violets, a lavender plant and a couple begonias. Will all of my plants need some kind of treatment?
Help!
(Pictures attached!)