you need nitrogen....start there, do a foliar feed of some maxigro or something similar......looks overwatered, ide slow down on that....see where u end up. Make sure you scope them too...unhealthy plants will show up with pests sooner rather than later.
used 2x6's and did mine....just ran 4 posts up and connected them up top with a square of 2x6's. basically like a huge table in the room with not table top...just a perimeter.
u know.....i have a fan that vents to the attic from my grow room.....doubt they could make it through though.....should I worry about that? its a strong fan.
i used avid, forbid, azamax, neem, soap, green cleaner, grandevo, benefactin, etc. they dont stop. all the plants are gone.
anything im leaving out or ideas?
im paranoid now....but get a loupe and look for pests.....that one close up of a leaf looks like the start of russet mites. look right on edges that are getting discolored. Hopefully you see nothing.