drying box ventalation... questions

1234abcd

Active Member
I have a 30 gallon (or 5 cu foot box) which i will have enoguh room for about 20 sq ft of buds to dry and i am not sure how big of a fan to put in it.

I dont want it to dry it out in a day cuz i dont want to lose taste, so i have 3 options on fans, i can put a 4" 80cfm fan, a 6" 160CFM or a 6" 250cfm fan. WHich one should i use for my 5 cu ft dry box?
 
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