Don't you love the directions that come with the vaporizer? They tell you almost nothing in four different languages.

Four hours is way too much. You're going to destroy the new growth on your plants. I turn the vaporizer on and let it warm up with the fans on, so essentially all the vapor is getting sucked out of the room - but so is the heat. When the sulpher is liquid I turn off all the fans for 15 minutes so that the sulpher can get to the leaves. Then I turn off the vaporizer and turn the fans back on.

I only had powdery mildew bad once. The sulpher contolled it and I now use it occasionally as a prophyllactic. When I had it bad, I cut off the affected leaves and the plants didn't seem to mind.

PC :smokin: