veg for 6 weeks then go buy a 250 or better hps, serious not trying to knock cfl's i once to belived in them. good for two things clone rooting and veg from seed. flowering small buds not worth the time if your not trying to learn to grow serious. use both to help have more lumes if all you can afford is a sm 175w hps. 175 plus 2 foot cfl = 175 plus 40 = 215 w get it ?