I would try to add some cal/mag nutrients. as mag. def. tend to show during 3-4th week of flowering. Im not sure if thats the problem but shit it cant hurt add some half strength.
Cool hopefully it helps. Are you using soil in a flood table? How does the soil stay in the pots and not run out when the table drains? Also do you have problems with roots coming out of the pots?
looks good your plants are smaller than mine but your buds are fatter than mine. and way more crystally. damn great job man.
Thats awesome!! When do you usually chop??