I made a tent with 2 parts one side veg one flower each 3 feet wide 4 feet deep and its 4 feet tall. Right now I only have a mh/hps light and am vegging on the flower side using mh. Once I get a veg light I will switch to hps that's light is 600w btw. What I'm asking is what should I use for veg side I can't use something that will use much electricity I need to use as little electricity as possibly but still need good results. And is the 600w hps good to flower 2 plants ?
I have seen very successful flowers with a 600hps! As for vegging light, if you can afford led that's the way to go. Otherwise I would stick with fluorescent, I veg under a couple of HO t5's and it may be a little slower, but can't complain at under 100w. Besides once it gets going I still see 1cm+ of growth daily. So to wrap it up, LEDs will work better, but cfl will do alright for a much lower setup cost
T-5 4' 8 bulb for just under $200. Somethin like 435watts and can keep my 4x4 tent closed and never gets above 80 degrees. I've even seen a 12 bulb version. HID always an option. LED are still relatively new and over priced.