ventilation experts!!!

davemoney

Well-Known Member
Just have you exhaust on an opposite wall to your intake...I've ammended your pic.

nah i know i was wondering if it would be possible to attach a duct to it since its not an in-line fan. i'm a real newb man with this my bad lol thanks for the help. bongsmilie
 

bonz

Well-Known Member
dony use that fan. is the same as a computer fan and is not accurate on the cfm.
those fans only push the labaled cfm and they dont exchange air. they are designed to blow on computer parts not cuck the air out of the box.
i doubt you will find an aprpriate fan for less than 100 bucks or so.
here`s a pic of mine. this one is a 6 inch and pulls 450 cfm, that is a carbon sock on the end. ( not recomended)

 

bonz

Well-Known Member
i looked at your other thread and the link the other guy provided has what you want. you need something like the first fan pictured. remember that if you want to get bigger in the future that you may want to consider getting a fan with a higher cfm rating so you wont have to buy it again

High Tech Garden Supply
 

davemoney

Well-Known Member
lol yeah thats what i thought cuz those fans look kinda weak. i was about to buy them last nite but i thought i would wait for more feedback on them this morning. damn those fans are expensive.
 

bonz

Well-Known Member
some hydro stores will have used ones. mine was used for 80 bucks. i believe m,ine is about 3 to 400 bucks new. a good fan will be one of the most important investments
 

DfyAnt

Well-Known Member
I advised you to look at those 3 because you wanted to use a computer fan to blow fresh air in, which nobody advises to use them. what I showed you is a fan to cool your light or blow fresh air (intake) which is higher CFM. what bonz shows (and I have one too) is for the exhaust.

now you know of both.
 

bonz

Well-Known Member
as long as your fan is good enough for that size room there will be enough negative pressure to run it all with 1 fan
 
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