Im guessing theres a micro/trace element missing for the health of SPS. The best way to know is ICP.
I would perform a 30% water change and dose a coral snow treatment with baceria/aminos to see if that helps.
Whens the last time you changed the RO membrane/filters?
I would perform a 30% water change and dose a coral snow treatment with baceria/aminos to see if that helps.
Whens the last time you changed the RO membrane/filters?