ok yep there are lots of threads about yellow leaves on phals. Fingers crossed those days are behind me but I like to check out video's online, still not seen any updates on the Orchid room in 5 months now by the way.
Anyway if someone asked on here what had caused their recent yellowing leaves would you look at the plant and say yep that is window cleaner damage?
No? Neither would I to be honest but apparently it can happen