a 150W cfl would be a BIG one ... it would require a mogul socket

are you sure its not rated to be equal to 150w of incandescent?? most of the boxes for CFL lights have that on them... like it will say 45w/150w.. .meaning its a 45w light that outputs as much as a 150w incandescent

incandescents btw are nearly useless to grow with... i have seen many very respectable grows done under all flouro lights though :thumbsup: