BCBD Tangie Cookies - Tent troubleshoot

I have ended the experiment. As I stated end of last week, I'm pretty sure I have sufficient evidence to formulate a conclusion. I can not continue to waste the space, electricity, and time. Moving on from the experiment I hit the dying girls with 1500ppm nutrient solution, will see if I can salvage any of it. This is week 6 day 1 of flower which means flower is about half done. She is a 9 week girl once flowers start which was end of week 1 (at least the last two beans of it I ran were.) Long confusing story short, flower has around 4-5 more weeks so its likely the last week I run liquid kool bloom. Will likely give a heavy defoliation this weekend as well. Update/correction - 15 May 22: I read back to check dates, turns out I updated early at some point. I'm day 2 of week 6 flower, apparently I switched to 12/12 April 2nd. Also had a chance to check out that nutrient solution I ran when ph meter was dead. 1400ppm - 6.35ph so it was good to go. Fed plants again today, starting to see some nitrogen curl on some of the smaller plants leaves. Going to start cutting back on flower nutrients and supplementing with more bloom boosters.