I've just sectioned off my existing box into 3 compartments 2.5x4x6 flower chamber, 1.5x4x4 veg-clone chamber, and 1.5x4x2 chamber for fan,filter, and electrical. The problem I'm facing is how big my intakes should be for each room. Gonna have a 6" inline fan and filter 440 cfm for the whole setup. I was thinking of cuttin 2 4" holes in the flower and veg chamber and vent them thru the fan filter chamber would this be enough air exchange for my setup? Keep seeing that the intakes need to be the same size or bigger just wAnna get some extra input. Any help would be appriciated.