What would cause these leaves to do this..

OldMedUser

Well-Known Member
No drooping so not likely overwatering but definite signs of heat stress either from the room temp or radiant heat from the light source or both

The edges curl like that to help cool the leaves which draws more water and nutes up there and can lead to burnt edges from toxic salts buildup. You won't see the bad effects until about mid-flower. Just don't feed any extra nutes as long as they stay healthy.

:peace:
 
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