4 inch or 6 inch fan for new tent

[biggerbud420]

i have a new tent 4x4x7 would a 4 inch fan that moves 205 cfm be enough or would i need the 6 inch 405 cfm fan ? which would be better i want to buy an ac infinity temp and humidity control fan

 

[coherent]

Really? the answer to this question is so easy to find the answer to. Did you even bother to try? I understand helping people who can't find answers to problems or questions, but when the answer is found quicker than typing the question I really worry about the mental aptitude of... well... earth!

What size fan is needed for other grow tent sizes?


(click to enlarge)

 

[biggerbud420]

i think i might go with the 6 inch i might 2 or 3 duct bends

 

[Kampbe1l]

another point to consider between sizes of the fan, to move the same amount of air - the smaller fan working towards its full capacity or a larger fan working at half capacity, using speed controller. the smaller fan would be working harder, and maybe louder.

if you're adding long duct run, or many bends in duct run, and carbon filter, then go for larger fan.