Zoos excreting and some web stuff?

[SeaMountain]

I've had these zoos for about a week and now they are excreting brown from the center. I'm assuming this is normal waste? And now there is almost a spiderweb nest looking thing growing from the LR onto the sand. I'm going to watch it and clean it out if it starts to grow across the bottom. Can someone tell me what it might be. I can't finds anything with the Search engine aend am probably using the incorrect search terms! :/

 

Thanks...

[Crakeur]

I'm going to guess that excreting and spider web will turn up one post on the boards - this one.

 

do notice that the mat that connects the individual polyps is receding or missing? it's hard to tell from the picture but it looks like the area around the polyps is decaying. I could be wrong about it (it happens from time to time).

[Simbo18]

Would that web-like mat be a sponge?? Or maybe it's some sort of bacteria.

 

Luke

Try and get a closer pic of the web.....