Protopalythoa

[Rocco8]

I have a Protopalythoa that was a beautiful green and has since turned brown.

Is it dying?

The long wavy tenticles have contracted.

Any ideas?

Other corals seem stressed.

Could it be the palytoxin?

[bertoni]

Can you give us a timeline of its coloration, when you added it to your system, and of any lighting changes?

[bertoni]

Oops, meant to add that Protopalythoa can release toxins into the tank water, which might be a cause for your other corals' problems. A lot of fresh carbon might help, if so.

[Rocco8]

I bought a used tank in February of this year. The Protopalythoa was green then with long brown tenacles but now it is all brown. I moved it away from a spaghetti leather and a frog spawn but at the same elevation. Both of them are going well. It started going brown in September. The tentacles are shrunk back.

Green stripped mushrooms, red mushrooms and fox corals have shrunk back. Lots of carbon present and an ozonator should remove toxins.