| I hope you are wrong in claiming Physan 20 is getting cult status. I have several times mentioned that I do not think it does anything.
It is a contact algaecide that was intended for washing greenhouse walls but failed to adequately kill the algae.
I have seen it recommended for fungus rot but can assure you it does not work to my satisfaction. Since it is a contact spray it is no better than rubbing alcohol. Possibly you are confusing it with Python 27 which is a systemic fungicide.
Now for your choice in orchids you did quite well.
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jerry  |