This will be my first real grow indoors. i was wanting my box to be 6' length 3'deep and 5 foot tall. just wondering how to figure the cfm i think its called for my vent system if anyone has any advice that would be awesome
6 x 3 x 5= 90 cubic feet in your grow multiply times 3 for exchanging the air 3 times a minute=270 cfm rated fan multiply that number by 2 for air restrictions if you have a carbon scrubber=540 cfm rated fan this is a six inch fan more or less( depending on the type) get a fan speed selector or a fan thermostat. All found at greners