what size inline fan to get?

i have a 3x3x6 ft. tent and my temps are getting to high it was 98 degrees yesterday so i think i need an inline fan. what size should i get a 4 in. or 6 in.? please help me out thanx
 

darkdestruction420

Well-Known Member
You want the air in your grow area exchanged approximately 3-5 times a minute, your cubic feet is 54 ft. 54 times 3=162cfm, 54 times 4=216cfm, 54 times 5=270cfm.
 
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