So a few questions i have here i have read that LxWxH/5 is the way to find out my cfm. Is the 5 the minutes it takes for the air to fully circulate a room? When i plugged my grow room measurements into that formula i end up with this. Math- [LxWxH]/5 [6.5x3x8/5 =31.2Cfm Does that math look correct? Is 5 a good amount of time to circulate a room or should i go with like 2-3minutes? Thanks for the advice guys my plan is coming along great with the help of all you great growers! Edit: Do inline fans run air in and out(Newb to this stuff)?
This is just for air circulation though. Your going to need more then that to cool your room, I'd get at least a 6" fan (400 something cfm depending on the fan).
6.5 feet x 3 feet x 8 feet = 156 cubic feet of grow space 156 x3(removing the air in your grow space three times a minute)=468 cubic feet a minute 468 x 2 for air restrictions on your fan = 936 CFM rated fan