You and MacGuyver420 should get together, he was talking about boycotting Walmart because they fired an MMJ employee. LOL
Apparently cannnabis can send up suckers that turn into plants. I guess they don't do it when the main plant is operating but will under certain conditions when the main...
Fresh air is essential, plants consume CO2 which must be replaced. If your fan is pushing air out, then it must be coming in from somewhere, unless you've created a vacuum. That would be REALLY bad for your plants. Get fresh air.
People have successfully grown weed in TT planters. Taking care of them high up in trees would be tough but it could be a good hiding place.
The plastic is supposed to be UV resistant. It's not, I had three of them fall apart after one summer. You might be changing them over every year.
I can't visualize the setup but your premise brings a question to my mind. Do all the leaves on a plant contribute to the wellbeing of the entire plant or just the area to which it is attached? In other words, do the fan leaves at the bottom node contribute to growth of the top growing tip and...
Find your problem here, sounds like N def:
https://www.rollitup.org/marijuana-plant-problems/158144-never-ending-abuse-phosphorous-bloom.html
https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html
New alltime favorite comedy...The Hangover.
Very obscure but great visuals when high...Sita Sings The Blues.
http://www.sitasingstheblues.com/watch.html