Yo Ho cutthoatish420,
I use 6 40 watt four footers, (grow tubes) just for veggin. I tried to follow through with them all the way, but the buds came out wispy and thin, and the potency was very diminished, but for initial veg they are great.
i use cfls and floros for the whole grow, 6500k for veg and 2700k for flowerin. most packages tell what spectrum the bulbs are. i can't remember what the soft, cool or warm is as far as spectrum.. it should be easy to find out by doing a search. hope this helps
the 6500k is cool\daylight . 2700k is the warm\soft. the cool white is best for veg and the soft white is best for flower.. jsut remember you can't never get too much light when it comes to flouros in flower so pack as many as you can have and keep temps .. hope this helps..