Where do you store your tanks when your not diving?

[LRRP02]

to the question bout pressure in tanks when storing them. steel no problem with 100 lbs of air but alum I would store them full. reason is that at 500 psi if you did have a fire the burst disc would not blow in time as the alum will degrade to the point of rupture before the pressure would get to the point of blowing the burst disc. for a fire fighter putting water on the tanks the explosion would very possibly injure them.