2.5 weeks old, sick/dying BTA?

[ceruleanspiral]

Tank has been running since January. I got this BTA on Sept 16th. I drip acclimated it over 90 minutes. It seemed to be doing really well since then. It opened up every day and balled up every night. I broadcast feed my tank frozen and a couple pieces of mysis and brine were grabbed (I think 3 times I noticed).

Yesterday I noticed that it folded up on one side and it made me nervous. I did a water change. My calcium and magnesium are a little higher than normal but I just did the water change yesterday, everything else seems OK? I even tested ammonia and nitrite just in case.

Temp- 78
Salinity- 1.026
PH- 8
Alk- 8.6
Ammonia- 0
Nitrite- 0
Nitrate- 5(ish, very light)
Phosphate- .03
Calcium- 470
Magnesium- 1410

I thought maybe a snail or crab fell on it, which would explain one side balled during the day. The only fish are two clowns that haven’t found it yet, a royal gramma, and a lawnmower blenny.

Today it stayed balled up entirely just like it does overnight. Now it looks like these last pictures. Is that the mouth open? That’s a bad sign right?

 

[ndrwater]

A gaping mouth isn't a good sign, but anemones can be weird.
Before getting all panicky and changing things, let it ride for a couple of days and see what happens. If things don't improve, then consider taking some action.

 

[ceruleanspiral]

Update- BTA seems ok today? I will continue to leave it be and monitor.

In other news, a snail left a bunch of eggs on my glass. So at least someone is happy in the tank.