Is this melting, and how to help them?

[zwandz]

Hey!
This is a few day development, and I’m not really sure what to do.

Parameters:
phosphate .03
Calcium 367
Alk - 10
Nitrate - 10
Ammonia - 0
PH - 8.2
Salinity 1.025
Temp 79

Zia’s seem angry in some spots and melting in this chunk photographed (I did blow them and pick at that chunky spot so the main colony being closed is my doing. It’s the bottom right goop-appearance) . Are they done? How would I save them?

 

[zwandz]

Possibly needed info:

Coralline is growing
I have a bunch of baby snails that popped up recently

 

[helwrj28]

Any update? How are they doing? Did you try any dips? Change of flow or lighting? Curious because I think my Sunny D frag might be going through the same thing..