I've started by using cfl's but am seriously thinking a 600 watt hps will be in order for the flowing stage, moving my cfls to the vegging chamber vertically up the sides and across the top to maximize growth across the bottom.

My personal goal is to grow bud that is better all day long than what I could buy, and from my business minded perspective, the better quality of inputs increases the better quality and yield potential of output. I'm not selling to anyone, just use for my own med and enjoyment.

I think the cfls can produce a great grow if done correctly, however what I think I've learned is that the for fatter, thicker, juicier buds and a better overall plant, an hps is def in order due to a more efficient and effective use of energy; the amount of lumens put out at a given costs will be greater.