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I have a green house 20’ long x 10’ wide and 8’ tall.  I started my grow 4/1/21 and now pull a tarp over the plants to simulate darkness. My problem is humidity. Started off with 80% humidity and 75 degrees F. I have a box fan hanging high and a 8000 btu AC blowing in to the enclosure. Last night I had 70% humidity and 63 degrees F. I’m in early flower now and hope to harvest first week of August. If I maintain those numbers, will I get in trouble with PM and if so can you help me with any suggestions? thanks Richard