Don't treat the PM. Treat the CAUSE of the PM.
A little voice in my head just said "What is the cause?"
And to that voice I say, "Hey, I'm on meds to keep from hearing you ... but, wtf, it's a good question so ..."
The cause is more than likely environmental. That is, your room is too humid, and warm. Get the room humidity down to about 50% or less and your plants will be healthier. Either by air conditioning, or dehumidifying ... but, do it.
I'm going back to arguing with the voices in my head now.
~Auggie~
Auggie... you hang in there man. Sometimes when I have the voices in my head.... someone is actually talking to me?? (And sometimes they're not) lol