Hammer coral still not happy

[Bradsreeftank21]

I posted about my hammer coral suddenly not being happy. He was in my tank and massive for the longest time. But for the past month he’s been not opening all the way and shooting this brown stuff out of its mouth. I know that they poope but he does this a lot. Here are some photos, is it that zoozanthea, however you spell it lol if so how do I treat it.

 

[dwest]

In my tank, if a coral is emitting zooxanthella then it is likely acclimating to higher light levels. Have you increase lighting or added GAC (which will reduce substances in the water that will allow more light to reach the coral)?