2 of my 3 Zoa colonies have been retracted for the last few weeks. My Alk was low and I slowly corrected back to 8.4-8.7 but didn’t notice much improvement. I thought the algae growth may be disturbing them so I did a Cora rx dip and h202 dip and after the Cora rx I looked under the microscope and found a strange looking worm along with some copepods. Any ideas what this is or if these critters may be annoying the zoas? Attached are a photo and short video.
