I have been reading some articles relating to UV lighting supplements to increase potency and yields and one common thing I’m seeing is the added benefit of preventing and or controlling / killing powdery mildew and other fungus/molds.
Video of a product offering made just to treat things like PM. Depending how you use it can be used proactively to prevent or after the fact if infested.
If you are in an area prone to higher humidity and PM and Botrytis are a concern you may want to look into UV as a non chemical solution to this.
My thoughts would be to add good supplemental UV lighting to increase potency/yields during flowering and this is also where plants seem to be more susceptible and the good UV lights will also help prevent this from even getting a foothold.
This is definitely something to look into for yourself if you have dealt with or your environment is conducive to this type of disease.
I have purchased supplemental 4’ single bulb fixtures (4 of them to cover my 4x8 tent) and will be using them shortly when I flip to 12/12 in about a week.
If you want to see the set up and results you can find it here
Will be a few days from today 5-3-19 before I post pics of setup.
Hope this helps and HAGD