I had a couple of questions if anyone can help. My grow space will be roughly a 2X3 space in a closet with six pots. If i bought a clamping lamp from home depo that could handle a 400w mh bulb do i need a ballast like some other complete sytems i've seen? and can I still get decent results in the flowering stage if i just used the same 400w MH bulb? I am willing to buy the comple system but if i can do it cheaper i will. any help will be greatly appreciated!