I can't vouch for flowering Northern lights under CFL, but right now I'm having good luck vegging them (actually as good or better than using Metal Halide). I'll try to post pics tonight when I get home.

I also plan to use a 400w HPS for flowering, which I did for my 1st grow with good yield for a 1st-timer. Get a 400w HPS, whatever it takes.
good ol daze Reviewed by good ol daze on . Northern Lights and CFLs? well I did get my order of Northern Lights seeds today from KC Brains 25.00 shipping and everything.Not bad.Now my question is simply this, my plan A is to veg under regular flourescents for 5 weeks then flower under HPS.As of this date I do not yet have my HPS and if push comes to shove will CFLs work on this strain and if so what are the main differences in the overall plant production when compared to HPS? Rating: 5