Do u know how and could u let me know how to make a yeast co2 device?havnt figured out how 2 send a direct message, so i had to find ya on here.got 5 iranian autos doing very nice havent used co2 at all unless naturally accuring.all girls sitting at 15 inches.do u have or know the yeast recipe?Also, at this stage do u believe the co2 is a good idea?