Yellow curled tips on leaves

[BuddahFinger]

I noticed some yellow tips on new growth on 2 out of 4 plants,
They on day 17
in 65% biobizz all mix topped with 35% light mix,
under a 320w led dimmed to 50% 28" from canopy in 4x2 tent ,
RH 55-65%, Temps between 25c -27c lights on, 22c lights off.

any ideas please, thank you

 

[namvet25]

That should green up in a few days as the new growth matures,if not repost another pic.

 

[BuddahFinger]

Ok thanks, I thought it maybe a deficiency or something, Il keep eye on them and post a picture in a few days

 

[Waira]

tip burn looks like from hot soil.... No feeds? Well nothing to do but watch and see if she adjusts,... give it several days to see if it really worsens; it may advance a bit regardless, but if it goes fast, let us know...