My betta had fungus about a week ago on one of his fins. It was a long cotton like thread... I treated it with Jungle fungus medicine. Today, he has a white tuft on his chin... I treated the tank again. Is there anything else I should do besides add aquarium salt? A few days ago I noticed a tiny white dot on his fins (he's blue), which seemed abnormal. I kept an eye on it and now it's gone... Plus, he hasn't built a bubble nest after his last one went away three or four days ago, where as he usually rebuilds one... what else can I do to help the little guy? 