Just try and give your plants a good airing by opening the door at least once a day to let some fresh air in. The fan's a good idea too just to keep it cool.
With regards to how close to put your lamps just try the easiest test -put your hand under the lamp at plant level. If you're feeling discomfort then chances are your plants will be too.
Asesino Reviewed by Asesino on . Ready to Go? ;) ALRIGHT. Just got my light. All I could afford was a 400 Watt HPS, but I know that you can grow nice plants with this. So I need to know where to go from here.. Ive got a small closet about 8ft High, 2.5ft wide, and a little over 4ft long. I wanted to use a bubbler, but I dont want to wait for gay ass pumps to come.. I just want to start, BADLY. Oh and theres the fact Im really low on cash.. I think I can scrap together enough for soil, ferts if I need them. Ive got a small fan, Rating: 5