Help My Chalice Coral Is Detaching

[dodiacuario]

Hello, everyone. I've had Chalices twice now, and I always encounter the same issue. Initially, they seem fine for about a week, but then they start detaching tissue from the skeleton. Within 2-4 weeks, they completely detach, and the tissue floats around the aquarium. This happened with my latest Chalice Space Invader, and I'm wondering if anyone might know what could be causing this. Below, I'll attach the results from the latest ICP test.

My aquarium is 100 liters, equipped with a Radion XR15 G4 light at 70% AB+. In terms of fish, I have 2 clownfish and 2 Nemateleotris magnifica. There are no corals nearby that could have caused damage initially. I attemptedamino acid bath to prevent deterioration (unsuccessfully), and I also tried a single bath of amoxicillin (also unsuccessful). I'm unsure if it was due to improper use or simply because the issue might not be bacterial.

 

[Wrassenaround]

Bump on this because I have had this happen in the past and mine recovered but I could never really figure out why it happened.

 

[dodiacuario]

It won't last many more days... I tried more amino acid baths and changing the light zone to see if it was too much or too little and none of that worked...