CFM / 1000w HID non-air-cooled

[t33to]

Hey IC,

I'm planning to use these parabolic umbrella looking reflectors in my setup. In total I'll have 1200w HID (2x 600w) of lighting. Is there a general sort of rule of thumb as to how many CFM of air change I should have for 1200w? My outside temp is around 59f, hoping to get my setup to cool at 81f max or lower. Idealy 77-79f

Thanks for advice!

 

[timmur]

Follow the link for the calcs you are looking for.