Quote Originally Posted by BeFree
I remember someone saying something about white powdery mildew on the leaves is from air born spores and some strains are very vulnerable to it.

I just pulling this out of the dustiest part of my mind, so don't take it for granted. :jointsmile:

Your :greenthumb: will continue to shine either way.

begood Mgm.

be

UV light inside an air filter should kill most air born spores. At least that's what I'm thinking.