I have a st thomas mushroom that up until today has been doing great. Today it's closed up and this clear goo is coming out of its mouth. There was a marble size ball of this goo that came out and I removed it from the tank...had 0 smell, mushroom also has 0 smell. I have 2 other St Thomas in the same tank and they're fine. I assume a bacterial infection would smell and since this is clear and has no smell I have no idea what's going on. Any idea?. I have a bottle of Kent marine iodine that's probably 2 years old...should I dip it or do the wait and see?