Phalaenopsis with dry black spot.

[Merita]

Hello everyone. I am new to the forum and I want to share and learn from you in the cultivation of orchids. My collection is small, more phalaenopsis than others. Previously these were in a room and about a year ago they caught a plague of false red spiders, which killed a few plants, product of this mite my orchids have stained leaves and a dry and black fungus in the armpits of leaves that it seems Fusarium, I am applying daconil, I would like to hear your advice.