I can't help but add that I think a new tank is the prudent choice. My tank was 55 gallons and when it exploded, in addition to the loss of fish life (many went down the heating duct into the furnace!) I had an indescribable mess. The tank was replaced for free by my horrified LFS
who apologized profusely. But the bill from the fire/water restoration people? Ouch. They did save my rug though. The bill from the gas fireplace people who had to fix it? Ouch.
Better safe than sorry! Take it from someone who had about half the flood you would have if, heaven forbid, a 125 failed.