Hi y'all, can any-one on this forum tell me witch is heavier D.I.Y. CO2 or
atmospheric air (air we breathe)? It has to do with an air-space at the top of
my D.I.Y. CO2 setup. I dont know if I should vent it or ignore it T.I.A. to any
and all who reply P.S. this is not a trol

With thanks and Regards Art