Another Biobizz user.....shocking. Sorry, I just wish i had a dollar for every grow deficiency question where Boibizz was the nutrients used.
First pic with the speckled necrosis spots looks like Calcium deficiency. Well hell, you have all kinds of issues happening with your plant. Best thing to do in a situation like that is to pH some water and douche out your soil with it. FLUSH!
Then allow to dry out till pot feels light, then re-feed according to the week of flower you're in and make sure your pH is correct at 6.2