last week the copper water supply to the water tank sprung a leek. I replaced it. The tank was full of water between the actual tank and the outside. I sucked all the water out, let it dry and turned the breaker back on. Yesterday I thought that air was back in the line but stuck my head in the sand. Today the breaker broke again. Everything appears dry and I see nothing wrong. What could be wrong? Am I in the market for a new tank. This one is about 5 yrs old.