Exhaust fans???

Stay@homeGROWER

Well-Known Member
So do divide anything, cuz dude in the hygro store told me to do the same formula but multiply by 5 and that is the amont of time you want to ventilate, so every 5 min...he told me a 95 cfm should be fine, waht you think??
thats what i've been told...and i was going to tell you that but i did the math in my own room and saw that I've allways had a fan that would empty the room in one min. like i said before my room is roughly 1000 cubic feet ( 15x6x10 ) and i use a 10" maxi fan that moves 1000+ cfm...... my last room was 800 cubic feet ( 10 x 10 x 8 ) and i was using a 8" vortex fan and was running in heat issues

i see you are running LED's so you won't have the heat output of the HID's so you don't have to worry about that but you do want a constnt supply of fresh air.....
 

alienascii

Member
I know 5 minutes is the standard for greenhouses and such but for indoor grows I've always had enough airflow to change the whole room in a minute.

With you running co2 and some ufo's maybe it would work. How much airflow do you have in the room?

You might want to do some research on flowering with LED's if you have high hopes. Unfortunately many salesmen at grow stores aren't growers themselves and give some questionable advice sometimes.
 

Kerovan

Well-Known Member
no, it's too small. I go way under what a lot of people recommend. And at that I still use 200cfm in a 4x4x6.5 room. for a room your size I would go at least 400-600cfm.
 
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