what cfm fan do i need????

I GOT 2 QUISTIONS.... QUSTION(1)my room is 2ft wide 2ft long and 8ft tall so what cfm fan do I need? like to exchange air 3 times in 5 minutes, QUSTION(2) should the fan sucking air out have moor cfm then the fan sucking air in???

what kind of lighting
hps bigger fan more cfm, cfl smaller fan less cfm

is this just gonna be for one plant? why the over kill on height its gonna be hard to penetrate thru more then a few feet of folaige

daloudpack said:

is this just gonna be for one plant? why the over kill on height its gonna be hard to penetrate thru more then a few feet of folaige

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I got 1 200w diamond series led and and 6 40w cfls, I have no control over the height its in my closet and it just happens to be 8 ft tall. I ran 3 aotoflowers all ready did ok but a 200cfm bathroom fan sucking air in and that was over kill I guess. it burnt up and want to know the best cfm fan to get this time around, the cfls get kind of hot. I will be growing 1 white widow toped 3 times then flowered.........

topping three times ur gonna get to bushy for your room ? are u running autoflowers again?if not how long are u vegging? i wouldnt go more the a couple weeks given ur area ... maybe an adjustable cfm fan.....or even just a 90 cfm in 90 cfm out since ur areas to small... i know nothing about led i grow cfl.....

do u fim? u can get up to 4 tops with a single fim

daloudpack said:

topping three times ur gonna get to bushy for your room ? are u running autoflowers again?if not how long are u vegging? i wouldnt go more the a couple weeks given ur area ... maybe an adjustable cfm fan.....or even just a 90 cfm in 90 cfm out since ur areas to small... i know nothing about led i grow cfl.....

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im just worried about the size fan,I pretty much know what i can grow in my room, i can veg 1 plant for 2 months if i keep the tops even and super crop

any 1 else is 200 cfm 2 much

With 200cfm fan you will have about 6 air changes taking place in about 10 mins.

Punch your data in here. It's how I got your answer

http://www.csgnetwork.com/airexchangecalc.html

pseudobotanist said:

With 200cfm fan you will have about 6 air changes taking place in about 10 mins.

Punch your data in here. It's how I got your answer

http://www.csgnetwork.com/airexchangecalc.html

Click to expand...

that is not to much is it