Soft corals melting

Maudsley

New member
Here it goes, Water parameters as followed.

SG=1.025
Temp=77
Alk 9 dkh
Calcium 500ppm
Mg=1230
Strotium=12 ppm
Phosphates=0
Nitrites=0
Nitrates=10

Two colt corals stated releasing a dark, thick stream out of them. Two days later they just disintigrated. Two other colts have shrunken but they look to be recovering. All other corals look ok...zoos, xenia. All fish and clams are doing good. Maybe a chemical war but with what? Any ideas would be appreciated.
 
I have not tested for that, but since my last post I did 2 treatments of Kents Tech D and both colts look to be recovering.
 
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