ok, so today not a single coral has normal polyp extension. Last night after the flatworms started dying, I put several pounds of pure carbon in the filter sock and let it run for a few hours. Before bed I changed that sock (It smelled to high heaven), and since I didn't have anymore straight up carbon left, I dumped a container of Pura Complete into the filter sock.
I haven't been running a phosphate absorbing media in my tank for the past couple of months, so I'm not sure now if the polyps are reacting to residual toxin from the flatworms, or if they've been shocked by a sudden drop in phosphate levels.
I've removed the pura complete and have done a 20% water change, and I'm not seeing any improvement.
Anyone have any ideas?
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