Frogspawn Help!

[Chief Tang]

I came home from an evening class and discovered half of my Frogspawn detached from its skeleton, still clinging by a small thread of tissue. It is in a moderate flow area. I have had the frag for going on 3 months now. My parameters and livestock will follow. I don't suspect it was a fish because it wasn't bitten. I suspect it's due to a nutrition deficiency but I don't have enough experience to know. Any insight would be much appreciated. I'd like to be able to prevent a recurrence.

S.g 1.024
pH 8.2
Ammonia 0
Nitrite 0
Nitrate 0
Phosphates undetectable

Did a 30% water change immediately following discovery, using Red Sea Salt.

Livestock:
Blue Spot Goby
Magnificent Foxface
Melanurus Wrasse
Christmas Wrasse
2x Cleaner shrimp

75 Gallon Tank

 

[fishchef]

What are your Mg, dKH, and CA levels? Also your SG is a bit low. 1.026 is better for LPS. What is your tank temp. and type of lighting, also?

 

[eddiereefs]

What he said, its called polyp bail out and can occur if its in too much flow or not enough cal, mg, alk, or ph is off