for sum reason all my 5 plants have grown really healthy but out of the 5 of them 3 were grown under LED'S from 2nd set of leaves to the 4th then put back outside and 1 was left under the LED panal and a few cfls added. Its amazing the difference in 2 twin plants 1 out side 1 in under cfl and led. The one outside is half inch taller but the one inside has 2 more sets of branches and is really green and healthy. i have done it this way to kind of test led's they seem to keep your plants healthy if u just let its a bit slower but really benifits u in the long run