Do you see the size difference in the polyps !?!?!
The first pictures are what it looks like now
I noticed that too in the first set of pictures. Looks like something is munching on the skeleton and maybe some flesh receding? Those almost look like urchin clean...
My levels are stable. Maybe maybe slight elevated phosphates and nitrates not too much and no hasn’t moved in three months. Everything’s been the same.
What is urchin clean?
It’s been like that for 4 to 5 days
The bright white skeleton showing through. Something is hanging out cleaning that spot. Urchins will eat the algae and grab bits of rock or skeleton so the bright white shows through. Most other CUC don't get all the way down to skeleton like that. I'm thinking something is bothering it or the flesh has receded.
What do you mean by maybe? Have you tested them?
Yes, I did test them I was saying within the past three days nitrates could have raised a tiny bit
What should I do?
Although the pictures look the same to me there appears to be a receding flesh band. I would be suspicious that you have low calcium and magnesium and/or nutrients. You need to list all your parameters so we can help.
May be reaction to oyster feast which is quite milky. I feed mine mysis shrimpA few days ago, everything was looking good all of a sudden after feeding the corals oyster feast, one of my hammer polyps started to close a little bit so I did a water change only 10 gallons and today a second one looks a little more closed.
It used to look like this less than a week ago
From the info given I’d suspect either a PO4 rise or something picking at the skeleton (but only if the recession is limited to that specific area). I’d give it a quick pest dip after lights out in just in case.
