I really should have phal culture down by now but it seems I can grow other genera much better. This phal I have had for over a year. I repotted in bark, hydroton, lava rock, and perlite in July. It sprouted new roots and leaves in June. However it is slowly becoming limp. I noticed a black spot underneath a leaf and some "bumps" on another. Also the new leaf has a hole in it. I sprayed with physan 20 which is why the media is wet. I don't see insects. Any thoughts on it?

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