Thanks for the reply!

The plants are growing indoors in soil in a 2.5' x 3.5' x 6.5' cabinet that I built. It's got an air cooled 400 watt HPS with a 450 cfm Vortex and a carbon filter. Inside I've got 2 of those 6" Air King clip on fans blowing on the tops, plus a 10" desk fan and 3 computer fans moving air under the canopy.

As far as where the PM came from, they are clones from a dispensary.... So...
SpicySativa Reviewed by SpicySativa on . Harvest/dry/cure - Battling powdery mildew Hey everyone. I've got some plants that have 2, 3, and 4 weeks left of flowering (Space Queen, Jack the Ripper, then White Widow). I've been battling a very minor case of powdery mildew using a potassium bicarbonate spray (Bi-Carb Old fashioned fungicide). It's been working ok just with a weekly spray (other than the pistil damage). None has showed up on any of the buds or sugar leaves, just a couple shaded fan leaves here and there. I plan to do one last spray of bi-carb a couple days before Rating: 5