I do not want to get ahead of loompa or greendot in offering suggestions as they are gonna be far ahead of me, but I can offer the following just based on my own experience. I grow in pure
canna coco, use canna a/b as well and am running the bx2, so our systems have some similarities. May I ask what your temps were in the tent? I noticed that whenever pheno #7, #12, and #23 in my room hit 82 degrees, they would get super stressed out. Leaves would curl and it almost resembled a nitrogen toxicity. Well, low and behold, pheno #12 looks like it might shoot some bananas. I wasn't too upset as it wasn't in my running for keeper phenos, but I did take notice of it. So to come full circle, I am wondering if you maybe had a heat issue? I know my regular plants I run take 82 degrees with the co2 concentration and love it, where as a few of the yeti do not. Thats my 2 cents, maybe it helps, either way I wish you the best!