i had this same problem and jus put it down to high humidity/over watering. but could this same problem be caused by a lack of oxygen in the water?
misk Reviewed by misk on . AHH help. Super leaf curl Hey guys. 2 of my 3 plants are showing strange leaf curl. The whole leaf is curling downward not just tips. Also the leafs curling seem to be just the budding leafs not the fans. 1 Ph is good. 2 Watering on schedule. 3 Been watering past few days with only water. no nutes. 4 Bottom of pots dont seem to have roots trying to bust out. 5 Plant seems to be sativa. Plz help guys. Rating: 5