I have a tank that was sealed before I got it and now it is leaking again. I can easily fix the leaks because they are cracks that can be welded. Naturally the welding will damage the existing sealer and it's obvious that it isn't sealed thoroughly anyway. I'm in no hurry to fix it so I haven't tried anything yet and have never ran into this problem before. I would like to totally remove it, fix the cracks and see if I can get by without having to seal it again. Will paint remover get rid of it or am I going to have to do one of the old rust removal tricks? I would greatly appreciate any suggestions. I don't know what brand sealer it is but it is a medium tan color.