Zoa skirt receded

[jtmojo]

My zoa's skirts have been shrinking or the skirt if folding in on itself, and I can't figure out why. Hoping you guys might have some suggestions. Some of my zoas have been producing new polyps despite the way they look and some of my zoas look just fine, so it has me kind of befuddled. Seems to have started after I added a few new some new frags to my system a probably a month ago or so; I dipped those frags and they looked fine on inspection before I put them in. Haven't seen nudibranchs at night, but I might just be missing them. Thoughts?

 

[TheEngineer]

Any recent changes in lighting or flow?

 

[jtmojo]

Nope haven't messed with flow or lighting.

 

[TheEngineer]

That's all I've got! I'm gonna stick around to see what others say. That's a nice collection you've got.

 

[California Reef Co.]

Sensitive zoas hate alkalinity changes. Has your dkh been stable?

 

[jtmojo]

Might be my dkh, I added some new sps around the same time. I just did a water change, so i'll have to see if the levels drop and I have to start dosing.