Pearl bubble coral spitting out sludge

[hexcolor reef]

anyone knows why my bubble coral spitting out this blackish/brown sludge? Could it be the reef roids I fed two days ago?

 

[dannyd_]

Could it be floating algae that was caught on the coral? Or are you certain it is coming from the coral

 

[hexcolor reef]

Could it be floating algae that was caught on the coral? Or are you certain it is coming from the coral

It’s coming from the coral. It closed it self now. Did some googling and it’s poop. Case solved