you already got your answer... yes... but at some point it is more efficiant to upgrade to HID.

indoors you generally calculate yeild. by available light... (per watt usually, although correct spectrum light is an important variable as well)
HighTillIDie Reviewed by HighTillIDie on . Is it possible to actually make a whole grow with CFLs? or will the end result either come out as small yeild or schwaggy or middy bud? i dont grow but was just wondering since someone was saying how weed can grow under every day common CFL bulbs.. but I personally dont buy it, but then again I dont know much about it.. but would assume it would only be sufficient enough for the plants early growth stages. Rating: 5