Do cool tubes work considerably better than other air cooled hoods?

Oh my. I certainly dont want to rain on your parade, but I don't know if your going to be too happy with that. Besides the heat of the light itself, the ballast for a 1000w HPS gets hot as a hell. Put it in a hood WITH the HPS bulb and Yowzers thats going to be beyond HOT. The heat generated by the bulb AND the ballast together will also shorten the life of each (the bulb and the ballast). Thats why grow lights have remote ballasts. You can probably separate the ballast from the rest of the unit by splicing a length of wire between it and the hood/bulb assembly. I'd like to hear what everyone else thinks???

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I dont have one but, my research says YES bigtime. And it makes perfect sense to me why.

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That is what my initial thoughts were. I am experienced with the HID lights..mostly MH though because I used to be big into reef aquariums. Then I thought a 1500CFM fan would cool both if I modded the hood.

8" Central A/C duct will be run to the room and dropped to floor level. I can add a window unit to the wall under construction if I must. I will use 2 fans. 1 for venting the room once temps hit 85 utilizing a thermostat and one that is constant on the filter and light assembly.

I also need to put the light on a thermostat to in case the cooling fan fails. I want the light to shut dawn in that event. SAFETY FIRST! I need some advice on this.

I can't use this for the light cooling fan???http://www.homedepot.com/webapp/wcs/...3+90401+502155 I will just use a few reductions in the attic to retro fit. 1600cfm is a lot.

Less turbulent air and a laminar flow...makes sense.

"That is what my initial thoughts were. I am experienced with the HID lights..mostly MH though because I used to be big into reef aquariums. Then I thought a 1500CFM fan would cool both if I modded the hood. "
Ok then, you seem to know whats up and you have a plan. Sounds good. Go for it. But i would still try to separate the ballast. Keep in mind the rating on that fan is without ducting, which will reduce the CFM's.

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Forgot about that...it wont be 1600cfm with 4' of 6" duct. I have to re-plan this.

Back to the drawing board. LOL

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LMAO!! I'm in the same position right now. Don't have a cooled hood for the 1000HPS in about 8x8x8. Using a 4" inline fan for exhaust and similar one for intake. Got a really bad heat problem. goes from 82-88F. The heat stress is causing the plants to herm in week 8. Just got a stanley blower. Hooked that up close to the hood and kept the 4" in place. Still didn't work cuz i have a small ass pvc pipe as the exhaust pipe out the house and can't change it. Thinkin about making an additional hole for exhaust, but it really isn't feasible. NE suggestions for that?