What is this white stringy stuff on my acropora, video inside

[Sailfinguy21]

I've seen this before on other acroporas but i dunno what it is. It keeps doing this too, the coral is growing very fast, and it isnt bleaching. I did a 1/3 of a water change like a week ago, mag is 1380, calcium is 400, alk is 7.5-8.

Only time ive seen something like this on acroporas is when the skin was melting. But i dunno, its either melting and healing super fast or its something else. I cant figure it out . here is a video.

Its that white stringy snot stuff on the coral its mainly all over the coral where it branches

 

[Sean1986]

Looks like polyp extension to me, or feeders. not a bad thing if that’s the case

 

[Sailfinguy21]

yea but this isnt on the polyps is like on the skin of the acropora. Look at the video again youtube is taking forever to process so its better quality

 

[motortrendz]

The polyps??

 

[Sailfinguy21]

You guys dont see the white stringy snot stuff waving around on the coral ? Im not talkin about the green polyps

 

[Squirrellyman]

You guys dont see the white stringy snot stuff waving around on the coral ? Im not talkin about the green polyps

@Sailfinguy21 - did you ever figure out what that is? I have that same stuff on a people eater cyphastrea. I saw it on an acro the other day, but no more.

Would love to know what it is, and especially if it is something to worry about.