Yellow tips and spots

I think it's too much light.. just put your lights further away or turn them down if they're dimmable. Check your ph just to be sure; but if your ph is good, then it's definitely lighting.. I've made the same mistake myself and I thought it was nute burn or bad drainage, etc.. in the end was light burn.. moved the lights back and entire issue was solved.

Ich bin da bei den anderen Foristen. Bewässerungsproblem. Die hängenden Blätter deuten auf zu viel Wasser, die verbrannten Blattspitzen auf einen Kalium Mangel. Kann auch miteinander zusammenhängen. Die Pflanze etwa mit 1/3 des Volumens vom Topf gießen. Die Pflanze muss es schaffen das Wasser in 3 Tagen auszutrinken. Dann wird wieder gegossen.

look like watering problem overwatered or underwatered

Without a diary it’s difficult to give a concrete diagnosis. The thin, yellowing leaves on top suggest possible potassium deficiency. The overall drooping of the plants suggest ph or watering problems, which can lead to perceived deficiencies or excess. I would recommend going back to basics, check ph of medium and water/nutrient solution, check that temps and humidity are good, proper airflow, light distance and nutrient ratio. If you are giving proper cannabis nutrients, check that you aren’t over/under feeding. Also start a diary so that others can help you better. Good luck!

I am gonna say it looks ph related. The leaves show calcium deficiency. But you want to keep nitrogen levels low during bulking.