I had this fungia on my substrate and it got covered in sand once. I rescued it and it started losing tissue so I did some save my coral work for it, fed it and did an iodine dip on it and it seems to be doing fine. After about a week it's starting to regrow tissue. Tonight I'm looking at it as the lights are starting to go out and it looks like it has little bubbles underneath its tissue anyone know what this is?

