Okay. So I was on vacation for a week and left my tank in a healthy manner and did a water change before I left. I came home today and I notice my Angelfish has a strange white puff coming out of its nose (I don't think it has a nose, but there are 2 small holes that are like nostrils.) I would post a picture of it, but my camera isn't working. I don't know if it is a disease or something. Please lmk what it is. If my camera starts to cooperate with me, I will post a picture of the fish ASAP.