What is this stuff coming out of my Hammer coral?

[joemc]

I hope this isn't bad.....I just installed my skimmer, and all of the sudden there is the long, stringy stuff coming out of my Hammer. Anyone know what this is? I just got it yesterday

 

[joemc]

anyone know what this is?

 

[fmelindy]

Is it brown? If so, its probably purging some zooxanthellae. If it has been fed it just might be the undigestibles...