Alright, I'd love to move from CFL to HID lighting. The only problem that's holding me back is the heat. I know HID lights put off some mad heat, but that's just from reading. I'm looking for someone with experience to give me some guidance.

I've looked at some 400W MH/HPS (Switchable) Cool Tube setups, but they all have 6" fan hookups. Could I get away with a 6" to 4" adapter running to my 4" exaust fan? Or is the heat too much for my fan to move? (a pretty high CFM fan, sorry I can't think of the specs)

Now I have one more question for you. What kind of headroom would I need (how close to the ceiling can I have it) for a 400w cool tube? With it being a cool tube, it seems like most of the heat would pass right through the exaust, so I wouldn't need much headroom. But that's why I'm here, I just don't know this information.

Thanks for the info.

(If you know a thread that addresses this, I'd appreciate that as well.)
chadsvb Reviewed by chadsvb on . HID Lighting (Cool Tube) - A quick question Alright, I'd love to move from CFL to HID lighting. The only problem that's holding me back is the heat. I know HID lights put off some mad heat, but that's just from reading. I'm looking for someone with experience to give me some guidance. I've looked at some 400W MH/HPS (Switchable) Cool Tube setups, but they all have 6" fan hookups. Could I get away with a 6" to 4" adapter running to my 4" exaust fan? Or is the heat too much for my fan to move? (a pretty high CFM fan, sorry I can't Rating: 5