Hey all! So I’ve had this acan for about 3 months now. Tonight I came back from work to this. One of its head looks like its melting and showing skeleton up to the center part. I tested my waters immediately and it all seemed fine. The only changes I made to this tank the past week is adding a peppermint shrimp. Could he be the culprit? Is there a chance my acans can recover? If so, what do I need to do? Thanks in advance! Oh, and here is my water parameters:
Salinity: 1.026 SG
Temperature: 27°c
Ammonia: 0
Nitrate: 10 ppm
Phosphate: 0.03 ppm
Alkalinity: 9.2 dKH
Calcium: 420 ppm
Magnesium: 1450 ppm