[olddog]

I never said the typical failure of a tank is an explosion. What I have seen is rust eats away, where the water sets. When a hole opens up, if your lucky, it just blows all the air out. Pieces of the corroded tank flinging through the air, with jagged sharp edges, is ugly if it hits you, and that can happen.

Again, if you keep the water out of the tank, no problem. Water forms when the air temp in the tank drops bellow the dew point of the air that is in the tank. All the new tanks I have seen inside are painted or coated to protect them from corrosion. I expect its a moot point as long as that coating stays in tack. At some point, moisture will get past it and start working on the metal. Since you never know when that is, it is best to keep the moisture out, the best you can.

I expect you have way less humidity and temperature fluctuation in California than I do in Ohio. I think you are fine.