What deficiency is this?

Thanks , she will definitely receive water+calmag only , probably for whole left grow (around 4 weeks left) I would also go with Nitrogen toxicity as i've seen the dark green leaves occurred in few hours i hope it's not nitrogen deficiency as i've increased the dosage of PK 13/14 to 3ml

The reason i say its nitrogen toxicity is bc of the shiney dark green leaves that is too much nitrogen

100 percent that is nitrogen toxicity. I just had the exact same issue. All i did was layoff and just water with calmag for a couple weeks and she bounced back. Those leaves will stay brown but no biggie

Looks like a cal mag deficient issue. I would try to lower ph. Use a shop vac to suck up runoff. I bet you're ph was higher prior to extra moisture pushing it out. I always look at 6.5 as a out of range. Probably having lock out ph soil issue over deficiency. Good luck and hope that helps