Minimum Cfm

[PUFF MONKEY]

howdy folks. i just bought 2 sunspot aircooled reflectors for my flower room, each housing one 1000w HPS. they will be used in a room approximately 330 cf (6x8x7) over a 4x6x7" E&F tray. i have never used this much power before and am wondering what size fan i will need to cool them..the rooms vetilation is controlled by one 160 cfm 4" and 2 CF 2600 filters. the math tells me that the room fan is more than enough but what about the lights...thanks

 

[PUFF MONKEY]

bu-u-u-mp

 

[WeedHopper]

Thats almost 350 CF of space. To remove that much air in one minute would take a 350 CFM fan. I personaly like to have a negative air flow. Meaning I have more hot and smelly air being removed, then I have CF.:hubba:
Course thats just me.

 

[PUFF MONKEY]

no, i got the room worked out but i need advice on the cooling of the lights

 

[jmansweed]

I run about 65 cfm per 1000 but that depends on vent tubing length and temp of light venting intake. I actually have three 1000's hooked to a 6in fan (125cfm) w/ about 20' of venting and it works fine. My intake temp runs around 65 degrees. It will depend on your specific situation but I think my fans are on the low cfm side to give you an idea - they work quite well however. Best of luck