I had an issue about a month ago with misreading salinity briefly (refractometer issue) and had a clownfish subjected to very high salinity for about a week or two. After normalizing levels, the clown developed a big bubble on its chin. It would get big, then pop and lead to a bloody chin. This has happen 2 or 3 times since. Maybe it's Unrelated? In any event, it looks pretty bad. The other fish (added after salinity was fixed) are all doing good. Eating great and look great, inverts doing well also. Curious everyone's thoughts?