Old Co2 Gas?

[fordtrannyman]

I may be picking up a really old (last hydro. date of 5/89) Co2 tank tomorrow for cheap.
I plan to trade it for a recently tested tank.
It's nearly full though and I have no idea if it actually has Co2 in it or how long ago it was filled. The only sticker on it indicates it's Co2.
Does anyone see a problem using really old Co2 gas in the fish tank?
Does it draw moisture?
Could it have any contaminates from the inside of the tank?

 

[Gerryd]

I would be careful since it has been so long since last inspection.

I would dump the gas personally and get it inspected and filled.

Why take a chance?

 

[Darkblade48]

I would also be careful with using the old CO2 tank. The gas itself is probably fine, but I would be more concerned about the structural integrity of the CO2 tank. These things can go off like missiles, so why take the risk?

Also, long time guest lurker, first time poster here on the Barr Report. Hopefully I will be able to contribute to the Victor Dual Stage Regulator thread as well