Quote Originally Posted by Backpacker420
If I'm gonna have a grow room approx. 4W x 4L x 6H, and perhaps 2-4 plants, would a 400w or 600w HPS be better?

I don't wanna buy a 400w and then always be wondering if I should have gotten the 600w...
lights are one thing but ventilation is another.........a 600 will work but only if you have the needed ventilation.

Mr. C. I like how you said 'sorry i couldnt be more help'.....to me that was so much more help than he asked....rep for ya