it could be the plant needs some magnesium put in it it could be really nothing a pic would help, add a teaspoon of epsome salt to a spray bottle and spray them once a day right before lights come on this should do the trick.

have you tested your PH?
invision Reviewed by invision on . What does it mean when a leaf curls? The leaves are looking healthy and green, except that around the leaves it seems to be curling upwards. What could it possibly be? Rating: 5