Auto Ultimate - Dutch Passion

I personally put wet laundry in my tent, with the bottom soaking in water so it keeps wet. But at your stage, I put a half cutted bottle over my seedlings (with small holes to get air moving) and mist inside. It keeps a good humidity when plants are young. Hope it helped Have a good day 💚

@Uk420Show she's still getting Nitrogen and got almost too much of it a couple weeks back so I doubt it's that - last feeding was 1ml/l Grow (4-3-6) 1ml/l Bloom (2-6,5-4) 1ml/l + Topmax 1ml/l and Calmag 0.5ml/l, I think if I gave more N I'd burn the plant, it's also an autoflower... To me it looks the most like a pH issue, but all tests show normal levels - I was wondering if it can be just too little P or some root issues? She also seems to not grow the speed she should, so something is wrong here but I don't know what. No pests found. I really don't know what to do next, just flush the whole darn thing and reintroduce nutrients, cut some of the bad parts off and hope for the best?