I plan on setting up a 2kw grow room. Would it be better to get 2 1kw lights on a light rail, or maybe 4 or 5 400 watters instead? My biggest concern is heat and light distribution. I would still be cooling each 400 watter with maybe a 4" inline fan. If I got the 1kw lights I would be cooling each one with a 6" 465cfm inline fan.
