Hey guy's I have an idea of what caused this,...

That's nutrients my friend not humidity. CHECKsoil.

Too much nutrition. Nute burn the tips get brow and curl up, and in. Potassium deficiency the tips get brown but stay straight.

Hey buddy. Do not be put of my asking questions. I DO NOT GET THIS. Why are ppl dogging this. It's a fucking question and I may add, his first. Hey buddy. With looking at your grow and diary. The very dark green is N tox and the wilting is probably down to salt build up and nute lock. It's just a case of too much nutes blocking any nute uptake. Hence the wilting, like it's foxtailing in a 2 wk flush. Just do a hard flush. And 1/3 of recom dose for seedlings, 4-500ppm and push up after 2-3 weeks as you c fit once you are hitting 9-1400 depending on the plants needs demands and period of growing that number may vary but in that range is what u wanna be at I'm heavy flower. Good luck.

Overfeeding is what caused this ,tips are burned. Only water the next 2 times and you are ok! Go easy on nutrients with seedlings and little plants ,if you have a EC / ppm meter don't go over 0.8 to 1.0 the first few weeks and raise it slowly 0.1/0.2 and look what happens . You will see you don't need as much as the bottle says. Happy Growing👊

Some real ass hats of late on this site.. no that’s not humidity

No you humidity is fine. I'm running mine nearly 20% high and 2 degrees warmer. More than like a nutrient burn if it is on multiple leaves. If it's just one could be anything. Could just b trauma to that leaf.

Schon Mal daran gedacht nicht wegen jedem Scheiss Blatt a Frage zu stellen ?