sounds like you have over fertised
bazzabodoing Reviewed by bazzabodoing on . Problem with a Plant - need some advice I have 3 Atomic NL plants that are 45 days old and 35" tall. I have had them on 12-12 light for the past week, after having them on 18-6 since they sprouted. I put them out during the day and if any additional light is needed I have them under floros. This morning one of the plants had brownblack spots on the older fan leaves. There were also a few rust colored spots. The worst is on the lower leaves and the leaves that are higher on the plant don't seem to have any spots. Does any one Rating: 5