Does this mean your replacing your light? or just changing the hood and bulb?
Or does this mean your putting a inline fan in your hood? im confused
There is a large suction fan sucking through the ducting attached to the light hood. The suction fan is pulling air conditioned air over the bulb assisted by a computer fan installed on the hood's open flange.
I would be removing the socket from the old hood and replacing the hood only with this:
It comes with a socket, but I'll just be using my native socket and bulbs in this thing instead of the fan cooled hood I'm running now. I would then remove the ducting and let the suction fan suck directly off the box for even greater air movement with little or no actual use of the ac compressor. It requires a huge external res of 50 gallons (if you're gonna roll without a chiller) with a 500gph pump constantly circulating that 50 gallons of cold water through that tube. Crazy, huh?
In addition to the power consumption savings, I'll be able to keep this light as close as 6" to my tops.
Edit:
There's a little loss of light intensity with this thing, but in a space as tiny as mine, it doesn't make a difference... and since the cool-to-the-touch 1000w hid can be placed as close as 6" from the plants... it'll be an overall improvement on my insane light to space ratio.
If you got one of these, you could run a 1000w light even closer to your plants since they're not trapped in a metal box. You'd probably close to double your yield if you did that.