I picked up an order at Extreme Corals today that included this very pretty brain. However, when I got it home I noticed a large open "sore", for lack of a better word. Now that I know to look for it I see that it was in the picture when I ordered the coral, I just didn't notice. Can anyone tell me what the problem is and if there is anything I can do to help it. I did a lugols dip when I brought it home. Thanks for the help!
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close up of the damage:
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close up of the damage: