MechEng99
aka Reef'd Up
Gotcha. Could it be that some of the zooxanthallae is repopulating the coral in that spot? I know some of my rescues if they are severely bleached get a bit brown nasty looking in a few spots before they fully color back up.
Brown jelly will jiggle if you blow on it, and some may slide off the coral. Cyano should blow off the coral. If whatever it is stays intact, wait on it to see what it does. Within a week you should be able to tell. If it's cyano, it'll go away or get worse. If it's brown jelly, the coral will be quickly declining, and if it's zooxanthallae repopulating, you should start to see that elsewhere on the coral.
If you get desperate, have someone with an Inland bandsaw cut that polyp off and house that polyp in a QT tank.
Brown jelly will jiggle if you blow on it, and some may slide off the coral. Cyano should blow off the coral. If whatever it is stays intact, wait on it to see what it does. Within a week you should be able to tell. If it's cyano, it'll go away or get worse. If it's brown jelly, the coral will be quickly declining, and if it's zooxanthallae repopulating, you should start to see that elsewhere on the coral.
If you get desperate, have someone with an Inland bandsaw cut that polyp off and house that polyp in a QT tank.