Chalice Coral Flesh Bubbles

[Js.Aqua.Project]

I've had this Chalice in one of the tanks at school for 3+ years and recently it has been bubbling it's flesh up. Originally I wasn't too concerned as I don't see any flesh recession around it, but I came in to work this morning and the bubble on top has gone from being <1/4" in size to at least 1" and began to "bubble" in another spot.

Any thoughts on what is going on? Should I try dipping the whole rock the chalice is on?

 

[Js.Aqua.Project]

Reached out to a friend who had seen the same thing, saying it was a bacterial infection then recommended a dip in a mild iodine solution.

Immediately after the dip all of these "bubbles" deflated. An hour later they are back but about 1/2-2/3 the original size. I will dip again in the morning and see if they continue to improve or not.

Anyone else have opinions on what may be causing this?

 

[Js.Aqua.Project]

Did another iodine dip this morning to see if it will help improve the chalice at all.

Here are the before/after photos of the dip:

It did the same thing yesterday when I dipped but it came back a little bit an hour later and overnight it seems to have gotten back closer to its original size.

I will keep updating as I treat.

Feel free to provide other theories/remedies if you've experienced something similar in a chalice before.

 

[Js.Aqua.Project]

Did another dip this morning, when I was pulling the coral out of the 80 and into the dip I noticed a small hole, looks about the size of a common pen tip. I'm now wondering if that little hole is what is causing all my problems.