440cfm

What up, just hear to learn...on my sencond first grow...its a small. Room 40"Dx29"Wx6'H with a 600w hps for flower and most of veg...until I get a better setup then the small 2x43w 4' T12 for my 4' tall veg chamber (above flower)...also have a 6" h/o 440cfm can-fan with a 26"x12" active air...