You will die if you use these tanks. To protect your health I would suggest you let my friend in Houston go ahead and take these off your hands.
Really, go to the second shop they gave you good advice. Do not trash the tanks unless the fail hydro and vis. The second shop could probably give you a good idea of the condition with a quick glance inside before you paid for a hydro and complete vis.
I don't know if I would return to the original shop with the advice that they gave you (especially since it was the owner.)
But still if you want me to aid in protecting you health I would gladly dispose of two steel tanks for you.
Really, go to the second shop they gave you good advice. Do not trash the tanks unless the fail hydro and vis. The second shop could probably give you a good idea of the condition with a quick glance inside before you paid for a hydro and complete vis.
I don't know if I would return to the original shop with the advice that they gave you (especially since it was the owner.)
But still if you want me to aid in protecting you health I would gladly dispose of two steel tanks for you.