Weird Zoo Strings

[no_wedge]

Just today all these strange brown strings have started coming out of the center opening in my zoo polyps. What is it, and does it mean anything?

 

[spunky]

they are expelling their zooanthlia (sp) which is like their sunscreen they are adjusting to your lighting. What kind of lighting do you have them under ?

 

[no_wedge]

MH 150w 14k, but I recently extended the time, so this could be why.