Quote Originally Posted by GetThisOrDie
How are the temps in your tent using the 400w? Is it aircooled and what type of fan do you use?

Temps running ~75F with an ambient room temp of ~70.

Reflector is a Sunspot 6, yes, air-cooled. My fan is a 6" Wind Tunnel, also using a speed controller on it. I only run the fan at about 50%. It's more fan than needed, but throttling it down keeps it much quieter than a 4" at full-bore.

I'm running into an issue in my current grow with regard to plant height. A cool-tube gives a little more headroom in a smaller tent. My reflector is nice, puts down a nice pattern, but it eats up a lot of room at the top of a tent.