Markings on top leaves

I've just had a look at your diary and wow you are certainly a victim of advanced nutrients sales tactics of I need all these lol. I was exactly the same until I dropped one by one and my grows got better and better. I can't deny it's great stuff tho. There are some you aren't meant to be using together like big bud and bud ignitor. Bi for wk1-2 and big bud replaces that for wks 3,4+5 and then swap for overdrive. Our of your comprehensive list you haven't got cal mag and it's possibly what you need. Although it seems you are at full dose of everything apart from grow micro and bloom. Those are at half. They will have cal and mag so maybe increase to 3ml/l . Make sure ph is on point too. Good luck, apart from this minor issue they look