If you have the option of a new tank I think that's the way to go. In my case I didn't have that option so I had the larger holes brazed shut then acid cleaned and coated my tank. Eight years later now and no problems. If you go with an acid cleaning and coating be sure to follow the directions. Those who don't have problems.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.