This is Easy one ! why it doing that .

I have them in hydrtion rocks on hydro flood table. is it from too dry or cold ?? what am i missing ?Thanks for showing sum love

how close r lights? could be heat stress....peace

Lights is 26 inches away.
room temp 72

check the ph?

Last night 5.5 today 5.9 .

Calcium or Magnesium deficiency.

Not sure but the curling looks like an environment problem??

Pro, to what specifically are you referring? I see probably healthy leaves, except that photos under HPS conceal so much possibly useful info. If yo are talking about the "edge flanging", I have a WW that "just does that" and I do not interpret it as a distress sign. Don't know if I helped. cn

looks like heat stress

I was judging from the inter-veinal yellowing but it could be the HPS.

1 more fan and the problem will be resolved .... had the same prob like u ...