Cabbage coral bubbles under skin?

[derpychicken777]

Since adding a new, stronger light, the cabbage coral has closed up, and now it’s bubbling. I brushed and blew off the bubbles on its surface, but all these bubbles are under the skin and inside the flesh. Is this because it’s receiving too much light and wasn’t acclimated to the new lighting? Or is it just shedding? If it is something serious is it survivable?

 

[Mr. Mojo Rising]

The white looks like flesh decay and the pointy parts might be the sclerites. Have you tried to blow it with a baster? From the color of the coral I would guess it was under a weak light, and if you added a much stronger light suddenly it would have a negative affect, corals should be acclimated to stronger lights.

What kind of light do you have on what intensity over what size tank?

 

[derpychicken777]

The white looks like flesh decay and the pointy parts might be the sclerites. Have you tried to blow it with a baster? From the color of the coral I would guess it was under a weak light, and if you added a much stronger light suddenly it would have a negative affect, corals should be acclimated to stronger lights.

What kind of light do you have on what intensity over what size tank?

Probably a bit dumb of me but yeah. This is a 20 gallon tank in a high school I set up for a teacher years ago and the cabbage coral was under one of this painfully dim tube lights for a good few months to a year. I’m in the area again for spring break so I went over and added a few more corals, fish, and inverts, upgraded the lights and added macroalgae and stuff. Cabbage growing fine and one of the only corals that lived for so long in that tank, I probably should’ve realized that putting it right under a much brighter LED might fry it. Blaster just removed some slime and bubbles. I don’t see any actual flesh coming off but that might change after a few days. The big bumps and tubes on it are where the polyps usually come out of although it hasn’t opened up since I changed the light a few days ago. Just lots and lots of little bubbles quite literally inside of its flesh right under its skin.

I’ll tell them to move the light off of it and slowly nudge it over it again over the course of a few weeks to see if they can save it and acclimate it to higher light.