Deflated cynarina

[BestMomEver]

Over the past few days, I noticed my cynarina looking a little flat. It was extended as normal but like a pancake and not fluffy looking. Today, it not only looks flat but is also not extending. Something is making it really uncomfortable. I’ve had it for 6 months or better. Parameters (since I know you’ll ask ):

pH 8.0
Ca 420
Mg 1170 (needs to come up a tad)
Dkh 9.7
Nitrates 8
Phosphate 0.03

Help please. This guy is an amazing highlighter yellow and pink. I couldn’t stand to lose it!

 

[BestMomEver]

May have found the problem but need help.... I just caught my Rabbitfish pecking at the cynarina. He did it twice. Has anyone ever had a Rabbitfish develop a liking for LPS?

 

[DMG Reef]

May have found the problem but need help.... I just caught my Rabbitfish pecking at the cynarina. He did it twice. Has anyone ever had a Rabbitfish develop a liking for LPS?

When I first got my Foxface Rabbitfish, he cleared out all of my zoas and palys within a few weeks. Since then, he hasn't touched any other corals. I have frogspawns, torches, Duncan's, and candy cane coral that he shows no interest in. So it's definitely possible that he's bothering your cyanarina.

But I just want to mention also that my Duncan coral is my "canary in the coal mine" for magnesium levels. When my mag drops to 1200, the Duncan stays closed until I raise the mag to at least 1320. I have no scientific basis for why, but it happens every time my mag drops. The SPS are never bothered by lower mag, just the Duncan.