what is this red thing?????

[g_acosta_02]

can someone please tell me what this red string coming out of my hammer coral fish pick at it but it doesn't go away

 

[Eckolancer]

Was going to say it is pooping as I've seen some with things kinda like that. Yours almost looks like a sweeper looking for food.

 

[Moonlightreef]

poop for sure , all my LPS poop like that after heavy feeding

 

[AJQ69]

pooping time