Mimosa x Orange Punch

Something is happening and I'm not sure what. Going for a nute burn although I'v been giving a half amount of recommended dosage by biobizz. Anyway, just used a plain water (with right ph of course) just in case. Did cut some bottom fan leaves too. Hoping that I'm just a little bit paranoid :) Update: for some reason I didn't notice that you should give other than bio-grow after switching to flower😅 so mistake number two. First was repoting too soon for a final one.