View Full Version : Hydro Date

05-30-2007, 01:21 PM
How can i tell the hydro date on 20oz Co2 tank??

05-30-2007, 01:24 PM
generally its 3-5 years afterwards...
most likely its 5.

But its cheaper to buy a new CO2 tank than to get it rehydroed, unless you live right near a place that will do it cheap.

05-30-2007, 01:35 PM
oh ok thanks. the tank was just bought so it should be ok.

Team Ramrod
05-30-2007, 02:16 PM
hydro date should be stamped on the top of the tank. i think all CO2 are 5 year (unless smaller than a 9oz?) so look at the date (month:year) and go five years past and thats your rehydro date

05-30-2007, 02:27 PM
chrommoly tanks and alluminum with a diameter less than 2 inches never need testing