Just got a NEW (old) tank off eBay and while removing the rust from the inside with white vinegar, a very very small hole appeared. so small in fact the vinegar only bubbled out at first. now every time i fill the tank a little bubble forms where the leak is but its definitely not flowing, yet.
Since it is such a small leak would you recommend just brazing over the spot with some brazing rods? or should i go all out and coat the inside of the tank with cream?
Also i am having trouble getting all the rust off. i have been using white vinegar, do you recommend anything else?