Hi,...I have two plants going,....afghan kushXblack domia strain in a ebb and flow,.....im flooding every four hours for 15 min,..they r 3 weeks old and 6 inches tall,....they r in 4inch grodon grow cubes set in hydroton,.....one looks fine,.....but the other one base of stem is small in dia and discolored and yesterday plant drooped,......what can I do to help my baby? Light is a 250 cfl 6500k about 10inches above the girls
