The purple could be high light but it could also be the plant. I have a couple mini Phals that I purchased from grocery stores that have a lot of purple pigment, especially on new growth. I have them growing side by side with Phals that have no purple pigment.
Even Phals purchased from good growers will stall and behave “funny”. Regardless of where they came from, their new home is a change and it can take them quite awhile to adapt. I bought a nice Phalaenopsis stuartiana at a show almost two years ago now: over the first year it grew roots but nothing else and dropped two leaves, then just last month it pushed a mini leaf, then early this month it started pushing out a normal leaf and (much to my surprise) last week it started a spike. I had decided back in March at the end of the first year, when there was no leaf growth, that this was not a happy plant: Phalaenopsis do things at their own pace. They’re adaptable but it can take years.
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