Hey thank you very much for the hasty reply! I just have two things I am concered with.

Your post says that it will "quickly" take out(kill) a tank. That fish has had stuff like that probably for a good 4+ months. It has gotten worse in that time though. I have another gouramie and a neon tetra and they both look good.

Furanace would definitely be the best thing. Where can I pick that up? Will a Petland have it? Also, even if my fish doesn't have the bacterial mouth rot will Furanace probably heal it?

Thank you much for the reply. I am new to fish tank problems on my own.