20% Humidity

Has anyone else ever had a successful grow with only 20%-30% rH?

Sure have. The humidity in my grow room averages 22% in the winter. Just harvested two weeks ago very successfully. If anything, the lack of moisture only required watering a little more frequently than in the wetter spring and summer months. Also, the low humidity relieved me of any bud rot worries and because I hang in the same room it hastened my pre-cure dry, that's for sure. I didn't encounter any problems along the way.

Good Luck!

yeah thats great just mist your small plants or clones

Awesome, one less thing to worry about. Thanks a lot.