Leaf cupping/Topside of petioles slightly purple (pics)

Hey everyone, having some issues with a sativa I'm growing. The leaves are cupping even with the lights off so I know it's not heat stress, what are other causes for the raised edges? Moisture retention? I just watered them yesterday and I live in a very humid environment. There's also a very slight droop but I don't know if it's the strain, don't some sativas droop naturally?

Another thing is that I think I burned some leaves when trying to harden the plant off on a windowsill, I underestimated the tropical sun I guess. It's funny because this plant naturally has the light green coloring of a sativa that is supposed to prevent this kind of thing.

The last issue is the petioles of the newest fan leaves are turning slightly purple, it's going to be hard to see in the picture but it's only the topside and it's a bunch of extremely small dots.

Growing on organic soil, EWC and chicken manure. Perlite for aeration.

Thanks for anyone that can help

She looks healthy to me, maybe just watered in pic. I've seen plants do this that are not under heat stress and then the leaves eventually flatten out when they fully mature. So not necessarily a problem. Good luck!

Thanks bugeye, that relieves some of my tension. The cupping has diminished actually.

But what about about the purple petioles? The most heavily affected one is of the penultimate fan leaf and it's quite droopy... The other ones are looking stiff.

Nitrogen deficiency maybe? Please help, I had a male I just through out that was having the same issue but much worse and I'd like to prevent it this time.

Update. Now there's leaf yellowing, brown tips and purpling of the stalk. Something is definitely off. Can I please get some help, preflowers are showing and this is a female.

I am almost positive it is a PH problem. EXACT same problem with my whole crop. Make sure your PH is around 6.5

My ph is at 6.8, I used dolomite when mixing my soil up so I know it's stable I checked 2 days ago.
What was your PH?

Anyone else that can chime in? Thanks perdido

Don't even look at baby leaves anymore, the plant is sacrificing them. Watch new growth.

Maybe a P def with a little Mg def. Really doesn't look bad.

Thanks snaps! I know the cotyledons fall off eventually but my three fingered leaves are being affected bad and now the five fingered leaves also have brown tips. The plant is less than a month old isnt that too early to go cannibal?

Please help, my plant will be gone in 2 weeks at this rate

bump.

bump.
bump.
bump.

Problem is still progressing.

ill keep bumping the shit out of this thread until I get an understanding as to why my plant is dying