Here's an update of my flowering tent, it should show pretty much everything I have to do to keep it runnig at decent temperatures. It's around 80 outside today and my tent was running at 91 set to 600w Super Lumens, I lowered it to 400w and is now running at 90. That is why I say just stick with a 600w instead of going down to a 400w, in the end, it won't make much of a difference.
[video=youtube;ohjAA5DAXrM]http://www.youtube.com/watch?v=ohjAA5DAXrM[/video]
Gonna have to look into it...
Plasma is the future