Is this mealybugs on my Phalaenopsis? I can't see any actual bugs and the white spots are much less fuzzy looking than the mealybug photos I've seen online. It started as a single large white-ish spot on one leaf then slowly moved to the others. The plant was repotted shortly before this happened. I have also seen a couple small white balls in the bark medium that reminds me of the crunchy texture or perlite.