Another stupid question

[Metalheadfrommars]

If a magnet don't stick to my co2 tank is it aluminum . Also what hose do you all use on your co2 tank

 

[IslandLizard]

Aside from being lighter in weight, and usually shiny, not painted, all aluminum tanks are flat on the bottom. Steel ones have a round-shaped bottom with little built in "feet" (bulges) they stand on.

Hose?
Do you have a regulator?

 

[Metalheadfrommars]

Cool I'm getting a regulater soon the tanks made me poor for a while lol