EXHAUST / air flow ?

ok so im 100% Newbee grower i haven't even started yet been doing all my research on everything.i need to know so hopefully i dont ruin a bunch of plants... i have heard some good and some bad from LED grows, but i decide to grow with LEDS if all else fails i can switch setups. Anyways i have been researching for about a month now got most all info inline of what im buying and how i will start but im kinda at a wall with air flow IN how much is needed and air OUT also good fans brands a good amount to keep fresh clean air in my grown AND also do you think i need a carbon air filtering out to help on smell and are fliters ? or air in and air out fans set up differ from different light set ups.

Also it will be a small grow starting maybe 2 plants end with a max of 8

constructive criticism welcome
Thanks for any help you can give

guess ill just have to go on trial and error

you are going to want to exchange the air in and out of your space in under 5 min, to calculate how much airflow you need multiply (height)(width)(depth) and divide by 5 that will give you the minimum cfm your fan needs to be.
intake fans should be a lesser cfm rating. passive (no intake fan) intakes are easier and more cost effective however as they are just holes.


also patience is a virtue full of weight and wait, so keep that in mind as you ask questions which can be easily answered with about 5 min of research on the GOGGLE, wondering why everyone has something better to do than to answer.