solo cup challenge heavyweight contender

We are starting the 5th week of the Silky_smooth solo cup challenge and my girl is looking a little angry today. Not sure if she is tired of the 24 hr light or the fact that her roots are crammed into a cup. I am still just misting the perlite a few times a day with a spray bottle. I can tell she is drinking more because the cup is light every time I lift it to spray. Just going to keep on keeping on and try to keep her alive. Day 32 she is looking much happier today. I gave her a little more maxigro for nitrogen because I am seeing some yellowing on the lower leaves. I think it may be due to lack of space for the roots but guess we will see over the next few days. Day 35 she is showing signs of calcium deficiency, mag deficiency, and just plain unhappy. I think she has plenty of nutrients, and the ph is good. I think there is salt building up on the roots? Just hoping I can keep her going for another few weeks