Hello, I have a hammer coral that I got a few weeks ago. the first 2 or 3 weeks it was doing fine. but it has slowly started receding, and is now not looking good. any idea what might be off? Tank is about to be 4 months old, other corals look fine.
Alk 8.7
Calcium 410
Magnesium 1320
Nitrate 4.9
Phosphate 0.06

Alk 8.7
Calcium 410
Magnesium 1320
Nitrate 4.9
Phosphate 0.06

