i researched PGLs and it seems that cfl's are just as effecient as Hps, a lot of times, people are mad at cfl's because they not putting up enough lumens, and in the end thats going to kill your yield, 50,000 or 100,00 cfls are good period, and for poor people this is a good way to step up to a high quality product, just buy about 40 to 60 watts CFL every payday, or any time you get money and you'll start having amazing success, there is a guy on one of these forums that grew 15 1/2 ounces with 940 watts of CFL light. The results are what matter. A pound is a pound.