need help cooltube or hood?

[Mc__Nugget]

ok so im trying to vent a 400w cmh in a relatively small area (23"x20"x48"). there are plenty of passive intakes, and the fan (465cfm squirrel cage) will also be responsible for extracting air from a vegging room of the same size, its lit by cfls so heat there isnt really an issue. anyhow would it be more effective to make/buy a cooltube and use that, or use a piece of tempered glass with about a 4" gap between its edge and the wall. i know my fan is pretty overpowered, but ive had gnarly heat problems in the past.

 

[washed up]

if cooling is the issue, tubes are the answer.

 

[Mc__Nugget]

bump any more suggestions please

 

[NiceShoes]

cooling a cool tube would not be difficult with ~400 cfm an air-cooled (enclosed) hood would not be difficult either. If you upgraded you ballast every I would go with the hood (8"). Temps are still an issue with a cool tube and a 1000 watt.

 

[Tactical Farmer]

CMH run darn cool - Done a temp test right ?

 

[ManitobaGrower]

ok so im trying to vent a 400w cmh in a relatively small area (23"x20"x48"). there are plenty of passive intakes, and the fan (465cfm squirrel cage) will also be responsible for extracting air from a vegging room of the same size, its lit by cfls so heat there isnt really an issue. anyhow would it be more effective to make/buy a cooltube and use that, or use a piece of tempered glass with about a 4" gap between its edge and the wall. i know my fan is pretty overpowered, but ive had gnarly heat problems in the past.

The difference your going to get between a tube and a hood is light footprint. Both with help with heat issues the same IMO

 

[washed up]

a tube has much less resistance and creates less turbulence than box hoods, and they are 100% sealed.

 

[Vegan]

anyhow would it be more effective to make/buy a cooltube and use that, or use a piece of tempered glass with about a 4" gap between its edge and the wall. i know my fan is pretty overpowered, but ive had gnarly heat problems in the past.

of those two options I would go with the cool tube diy. ..
just make a good reflector to bounce the light down at the girls

 

[irieserver]

what do you think about this light setup for a 8ft wide by 2 ft deep by 8 ft high closet?
My Light System

XtraSun 8 Inch Reflector - Air Coolable $103.95

Super Grow 1000 Watt Sodium Ballast
$155.78

Hortilux - 1000 Watt Super High Pressure Sodium Bulb - LU1000B/HTL/EN $84.95

TO complete ventilation I'm going to get an exhaust fan ~250cfm be OK? and an intake vent, of course.

thanks

 

[choch]

irie - imho 8' wide is too much for one bulb without a light mover. Two reflectors/bulbs or a light rail will provide a huge improvement in light coverage. Hth...

 

[irieserver]

cool thanks for the advice i will look into a mover