nope,
Doesn't work like that, not enough Co2 that way to make a difference. Plus I have a feeling you would burn your leafs bye misting them while your lights were on. Better to mix yeast sugar and warm water and let that create co2 for your plants.
you can find how to do it on this website. Before you actually spend good money on co2 you should make sure everything else in your grow room is perfect or else it wont do much. Like no cfl's, HID it up. Temps & humidity right, ect,ect. Good luck with growing.