This plant reacts negatively to any sort of nutrients given to it, it started off with nitrogen toxicity hence the stunt of the buds growth, it is doing OK since just using water, but potassium is needed and phosphorus etc and it just doesn't like them. I guess genetics will tell otherwise but its one to monitor. All is OK!
Looking good and progressing very nicely !! Good luck !
Please feel free to check out some of my recent grows (Tropicana cookiez/Venom OG/Banana Mango )