Quote Originally Posted by Mr. Clandestine
I have a 400w core/coil ballast, about 6 years old, and it doesn't raise the ambient temperature of my room whatsoever. I keep a small 10" fan trained on the vent holes every time the light is on, and it never gets hot.

I stand by my statement. This is a good deal. Were it a 1k system, I'd be worried about head. As it is, a good active exhaust in the room would easily take care of any heat problems.

Jack: Don't worry about the extra $20, bro. That light is a good deal for the money. Just remember to spend about as much on ventilation as you do on the light, and you'll be just fine! :jointsmile:
He can't afford $20, he's growing in a rubbermaid box (I've seen nice setups but it says alot for his budget), and he's growing in a closet which will have little fresh air.

With that said, I suspect heat will be an issue. And considering that he can't afford $20 I doubt he has any money to spend on ventilation.

I agree that this light is a bargain and will work, but not if all you have is $100 and nothing more.

I'm betting you have more than just a 10" fan blowing on it. Probably also have an exhaust pulling hot air out of the room and probably have some form of cool fresh air being pulled back into the room. Either via a passive intake or an active one.

I'm just concerned about heat in the closet for a guy who only has $100 to spend.

Good luck :jointsmile: