Hey Washougal,

84.5 sq. ft, 676 cubic feet, 450 cfm vent fan. Also have 2 fans running for air circulation... been running temps (lights on) of about 76-80 with a humidity of 45-55%. Lights off, it does drop to about 63. I've I read powdery mildew thrives with these environmental factors.. good for cannabis, good for PM.

From what I'm seeing so far, the baking soda mixture (4-5 tsp : 10-12 oz water) seems to have worked well for the time being. No new signs, though I'm considering hitting the plants in veg with a fungicide as a prophylaxis to prevent any recurrence. I was going for the Eagle 20 Copobo mentioned, but my other 1/2 is on my case and thinks I should use the neem oil she has in the garage vs. buying another product. Anyone have any experience treating PM with neem oil?

Peace,

Farmer Rich