Help with Id on coral/whatever is going on

[Floopynoopers]

Have had this coral in my tank for a few months ( not sure the name it was sold to me as a mushroom coral) and it seemed really happy grown heaps almost always opens up during the day (including today) however just noticed when the lights turned off that it had this going on. Any help would be greatly appreciated I am relatively new to saltwater and really love this coral.Last picture is what it looks like normally in the day.

 

[fishguy242]

hi, welcome to the reef...
toadstool leather coral, not bad but looks like rot,
i would take out tank, snip,snip, a V cut out that section ,iodine dip if have ,should be fine IME
Use sharp scissors or razor blade, wipe oil off razor blade before you use...

 

[Floopynoopers]

hi, welcome to the reef...
toadstool leather coral, not bad but looks like rot,
i would take out tank, snip,snip, a V cut out that section ,iodine dip if have ,should be fine IME
Use sharp scissors or razor blade, wipe oil off razor blade before you use...

Awesome glad to hear, thank you for the advice