Quote Originally Posted by brookerosebud
stay about 2-3 inches away from your plants or you'll get burns. buds will stay kinda small and airy with cfl's only; if you can add an hps, do so.

first is from hps, second from cfl...
From looking at your pics i can tell you right away why you got such a low yeild using CFL's... simply, your plants are too big. CFL's are for smaller plants, as they cant penetrate the canopy very well, unlike HPS. I can tell you know if you'd kept your plants smaller it would have yeilded better than it did.

HPS will always be the best though, because it's got the lumen output and it's the perfect spectrum.

But CFL's can give VERY nice yeilds, if used properly.