Atombomb is somewhat correct...
CFLs WILL give you buds. That is no lie.
I must say though, if you look at Atom's first image there are 13 CFLs in view. He likely has more than that. Even at say, $6 bucks a pop per light (low-balling here) that is 13x$6=$78... Also, the distance between the CFLs and the plants causes disapation of lumens....
So, realistically one could get (2) 150w econos... pump a joint 300w from them... for under the price that Atom paid... (at least $78 for CFL VS $64 econo) and it would have better penetration.
Im not all for HPS and against CFL.. I think CFL hold their own... Just want to mention it in a more price efficient manner.
I wanted to do CFL throughout my entire grow.. but while measuring the prices and the fact that I could kick a cooltube on my 150w econo.. then I wouldnt have to deal with the heat from 13 42w CFL bulbs.. it made more financial and heat efficient sense to do the hps...
just my 2 cents