Long tentacle plate coral leaking Blake stuff

[aquaman05]

My plate coral seems to be leaking this nasty black stringy stuff from it and its all over my tank. Has anyone had this problem before with a long tentacle plate coral? If so what should I do?

Sorry that title should have said black stuff.

 

[cloak]

It could just be defecating. They'll do this from time to time. How long have you had it? Do you have an up to date picture?

 

[aquaman05]

I've had it for a couple months now.
It looks real big at night but now during the day the tentacles stay small.

I'll try to get s pic and post here in a min.

 

[aquaman05]

I think I know why. I done a water change and the water I used the salinity was to high. It raised my tank up and I think the plate coral didn't like that change. I hope it pulls out, but I can tell you it's leaking alot if that black crap out of it though.

 

[cloak]

That doesn't sound good. If it's not poop it's zooxanthellae, and you don't want to see that coming from a coral. Try to get all your parameters within reason and hope for the best. There not exactly the easiest corals to keep.