Did you mean 20 ounces, or 20 pounds???

in the US, we see .oz as ounces... if I'm wrong, forgive me... I'm not that
worldly...

"-=Almazick=-" wrote in message
news:QZEcb.429657$Oz4.227690@rwcrnsc54...
If I buy 20 oz CO2 tank, how long will it last?