Melting torch coral

[Coralgurl]

I have quite a few lps, Duncan's, brains, lobos, fox coral, button, frogspawn, bubble, zoas with growth, mushrooms which are splitting. I've also got a pectinia which went in 2 weeks ago, a couple sps which are also fine. Im stumped.

[Coralgurl]

Fish
Sebae clown
Blue hippo tang
Tomini tang
Solar wrasse
Radiant wrasse
Royal gramma
Bangaii cardinal
Orange diamond goby
2 spot hogfish