What's up with my acan??

[BC1906]

Looked fine yesterday but this morning it looks like this. Did a water change yesterday and all other corals look fine.

 

[nex64]

Looks like Brown jelly or some kind of fungal infection , I'd frag the heads that are not affected and toss the rest before it spreads to the entire colony

 

[nex64]

How is the flow in your tank or that spot where the acan is?

 

[BC1906]

Flow is good. There is an acan echinata semi close to it. I wonder if it got stung.

 

[nex64]

That could be another possibility, might be time to separate em lol those echinatas have some nasty tentacles

 

[Reef_Collector28]

Looks like when another coral stings a neighboring one. I would frag the dying heads incase the remaining heads start to go south on you.