Hi I have 3 plants and they all have the same soil , same water, same light, same ph.. but I notice one this morning with the leaves curling up.. any one know why any help helps..
I agree with the other guys; looks like minor heat stress to me. Good call moving the light up a bit.
Hps
It does look like heat stress, if the canopy air temp is in range then I'd guess the light is to close.
What light are you using and how close is it?
possible sign of heat stress . how far away is the light ? might try raising it up a bit & see how she responds.