I've been dealing with powdery mildew quite a bit in the last year.. I use an organic spray consisting of mostly oils, the important one being garlic, which is supposed to raise the Ph on the leaves from it's natural sulfur content. I also have a burner in the room that I burn sulphur in during the dark cycle. 1 hour, 3 nights later 1 hour more. Seems to be working.. Making sure not to over water helps too.

One thing I've noticed is that the mildew doesn't really seem to get in the flowers and stops at the sugar leaves.. Instead of Jorge's washing method, I simply pluck the leaves (during "trimming") and have gotten great results and the bud was good as ever.

Seriously Tacman7, try plucking before washing!!

Peace,

Farmer Rich

PS - That G13 Haze in my other post was a huge problem that I fought the entire grow.. clean now after about 6 hours of plucking..