OK, lets say I germinated a seed. Planted it 1/2" under the surface of chosen medium, everything went fine and she popped. Now what? Can I use a 400w HPS throughout her ENTIRE life cycle? How far do I keep it from the plant at different stages in its life like germination, vegetation or flowering? Do I begin vegetation as soon as she's sprouted? I've read a shit tons over the past few months but can't grasp these few things. I'm new to growing indoors, and I can't afford to keep paying street prices. PLEASE help? Also, if a 400w HPS is out of the question for the earlier stages, what would be the cheapest alternative that would be suffice for flowering as well?