What is happening to my Frogspawn?

So the day before yesterday morning, before the lights came on, one head kind of turned out and ejected a bunch of snot. My brain does that from time to time. The head seemed to return to normal. Yesterday morning didn't seem too bad. This evening, the mouth is open, and the head is limp. The tentacles are not retracted, they are limp. The other two heads are fine including the 2 babies. Any ideas??

 

Pictures would help.

What is your specific gravity and water temeprature

 

Anyone been nipping at it??

 

Sorry, I don't mention it because it is always good. Amonia, nitrites, nitrates, phos are zero. Keep Ca. at 400-450, Alk at 4.0-4.5 on SeaChems test.

The frag was off my LFS home tank. A big head broke so they fragged some out. I've had it for a couple of weeks and it has looked very healthy. Nothing is nipping at it that I can tell. The other heads look fine.

I bought a different frogspawn and it started to die. One head held on though and it looks like it is coming back. That was just a small frag in a store I got. everything else looks good.

Can't take a pic now cause I'm at work.

 

Sounds like it expelled it's zooxanthellae

 

Here is a pic.





As you can see, it is the one head. It always looked just like the others. Right now the tentacles are all retracted. The lights are not even on yet. During the day the other heads are all extended and puffy.

Oh ya, ETA: tested water this morning. Nitrates zero, SG 1.025, Cal 400, Alk 4.0 meq/l. Ph was 8.1, but low from night. It was time to add some buffer anyway.

 

So that head is toast. It has sloughed off. Just hanging on by a thread. I'll have to dig it out when I get home. Now the other heads are not looking as happy. Didn't really extend today.

Any ideas???

 

They can do that? What is the curative measure to take if that happens, if any?

 

Is mag good? Just a thought. How are the other corals looking??