Green Ricordea Splitting?

[Aspect]

Hey, my Green Ricordea just split and the main piece was emitting a long brown tentacle looking thing from it's mouth. Any idea what that could be? Didn't get pictures when it happened but it was long like 3-4". Had it for ~7 months and it didn't grow at all on my sand bed. Moved it to a higher rock for the last month or 2 and it finally split.

 

[Saltyreef]

Hey, my Green Ricordea just split and the main piece was emitting a long brown tentacle looking thing from it's mouth. Any idea what that could be? Didn't get pictures when it happened but it was long like 3-4". Had it for ~7 months and it didn't grow at all on my sand bed. Moved it to a higher rock for the last month or 2 and it finally split.

Long stringy and brown is usually indicative of coral poop