Quote Originally Posted by RastaKaze
I have an air conditioner to promote humidity,
Actually your air conditioner will promote dehumidity.

Also, you may want to reconsider your decision to use a bat wing reflector.

Also you may want to consider a full spectrum bulb or a MH for your veg period.

If you, for some reason, are stuck on the 400 HPS, and cannot upgrade the bulb, or, change to MH, you will want to have your HPS much closer to plant surface....and thus you will NEED to lose the reflector.

Either way, you know where the peeps are that will help you out.

Good luck.