Over watering, or over fertilization causing a PH balance problem.

It looks to me like they are burning up. The curling is a sign of them trying to conserve water because they can't take up any thru the roots. Try flushing with a super mild solution and don't let the roots sit in standing water. I mild foliar feeding may help recovery time too as they will take in nutrients thru the leaves faster than the roots if you have a ph balance problem.

Don't over water and be patient, this could take a week or so to fix
mendokid Reviewed by mendokid on . sick leaves Hi all i got a little problem that needs some attention pretty quick cause its spreading to my other babies any ideas? thanks HDF. Rating: 5