just thought id say my mate has 2white widow's and they were @ 2weeks and looked bigger than those @ 4weeks !! and there under 1 x 250w blue spec 6400k cfl envirolite...he used to use a 400w hps for veg but has now found the 250w cfl does a much much better job ,no strech,tones of new growth !, and very very bushy they already have a nice smell to them lol i was really suprised when he told/showd me the plants the first week was pretty slow but i saw them a week later and they looked like diffrent plants lol !!! just letting people know cfl's from what ive seen lately can work very very well for vegging plants !!!
and your plants look nice now pal keep it up !!