m0useanswered grow question 3 years ago Remeber to link your diary to the question.
BioBizz likes a PH aorund 6.2-6.3 I'd try and lower it a bit to see if this helps the problems.
Its also advised you let your BioBizz feeding solution sit out overnight and let the PH settle before adjusting it.
Given all the products are adding into the water you want to confirm its EC is on pair for your stage of growth too.
https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/
Best Of Luck!