Looks pretty good....why are you flowering with a Metal Halide bulb? HPS throws more lumens and is better for flowering. You can get 400w HPS bulbs for like 6 bucks on 1000bulbs.
to be honest im not to sure what the bulb is the guy i bought it off said it would be ok for flowering, as im a newbie i dont want to take it out and have a look at the bulb right now, but it was a sylvania 400w fromwjat i can see print on it is a bit faded but il get a new bulb for it after this grow. i think this is it