Hi Bill,
From reading here for a year or so it seems that Nitrogen might be the
best gas to use. I doubt you could get anyone to fill your tank with
Nitrogen. lol
Best of growing,
Bob
SW Florida USA
>I have a 50# CO2 tank (converted fire extinguisher)
>that I have used to run an airbrush, but I am not sure
>it would be a good idea to fill tires with Carbon
>Dioxide. It holds a lot of pressure and volume too.
>cheers, bill b.