Death?

[Chela101]

So I have this skittles favia and I got it when it was doing really bad, almost no color and NOW it has gotten its color and I seen it start growing but today it has like a black hole with like something coming out, first 2 pics are the corals and the last pic are my levels

 

[Rocks reef]

It looks like it is expelling waste. Not sure how else to say it, but its "pooping"

 

[Pistondog]

What he said ^^^. Do nothing.
Levels look great.

 

[Xxtreme]

Dookie i believe