I would like advice

NPK def

Hi sieht aus als ob es Ph Probleme sind. Messe dein Abfluss dann kannst du es ausschließen falls er okay wäre. Viel Glück 🍀.

Unfortunately without a diary with relevant information it's a tad hard to diagnose. I'd say some parts look like nutrient burn and some parts look like potassium problems.

Slight nutrient burn if my guess. Tips brown and crispy. Might just need to dial it back a bit for the time being then ramp it back up if it needs it.

Wish we knew what you were feeding. Seems like the affected leaves are at the top, I also noticed the pistils seem to be turning color and it looks to be to early for them to be doing that unless the plants are actually older then I think. Based on 2 issues I see at the top of the plant, I would be curious about your light settings as well. You are still in early flower so I would be running the light like you're still in veg. 24" height and around 40%-50% intensity should be fine. You can increase as you get to the middle of flower but watch the leaf tips and pistols and make sure they're not getting light stress.

Hey there 1st I would check the ph of the run off water. Collected from the bottom of the pot when you water. If that iff then buff water to fix soil ph with a good flush There is no info on how much if any nutrients your useing. Although it does look like you gave the plant to many nutrients and it bleached the tips of some of the leaves. I don't think it will be that much of a problem I would be cautious and use 50% of nutrients you did b4 and water with water on the next water and then go to the 50% dose. If plant continues to head for the light and takes turn for the worse really fast then most likely you need to flush the soil with a bunch of water and water down the nutrients built up in the soil. Don't freak out and do anything you can't take back. Always side with cation don't add mote nutrients thinking it's deffency unless you have been give 0 or close to 0 amount if nutrients