I am currently thinking about setting something else up again after being dormant for about a year now. I needed a break from the responsibility. However, as I am trying to get another thing going, I am pretty set on using my mars II 400watt for the veg stage, and acquiring an HPS setup for the flowering, this seems to be a no brainer across the board. I used to use a t5 setup, so this should all be a great new design. Here is a link to my old grow journal if anyone is interested... NorthernBerry Private Paradise - First Grow Is a 400w HPS going to be sufficient for a 3'x3' space? Or should I go with a 600w? From what I have read, 400 seems like plenty but I am still a little unsure.