Fan size for cooling lights

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monkeyhammer

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I am in the process of planning a 6x8 room. I am going to run 4 600 watt hps air cooled lights. I was going to use 1 fan to cool all 4 but decided it would be better to break it up into 2 sets of 2. So what size inline fan would you recommend for 2 600 watt hps's?
In addition to these fans I'm going to run 1 fan dedicated to circulation.
 
most 6 inch exhaust fans are 460-560 cfm i would use two of them, you will be able to add filters.
 
Really depends on a few things. Ambient air temps and needed air replecement if your not runnong CO2 and scrubbing room instead of exhausting out. I am running a seperate heater right now at night running 2k watts with 440cfm.
 

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