as you can see on some picture some leaves have bu...

well. i go either with a) a lightburn or B) with a potassium defiency....... Its hard to tell atm... i let you a link for selfdiagnosis in the comments . But you have been very heavy in grownutrients too, so i go with the classy comination......to much Nitrogen/ to close to the light.. and maybe a potassium def.......but only maybe... its really hard to tell