I don't know what is wrong

[TommyGo]

I see this is a mixed reef. It could be as simple as LOS releasing toxithat affect the SPS for which i had a similar instance. It was Triton that bought this to my attention.
Try adding chemipure blue which will break down these toxinsand see if any change after 2 weeks.
I saw changes right away after a week

I'm little hesitant to add that to my tank. I don't want it to strip out the phosphate. Is this concern valid? I am, however, running ROX carbon in a bag.

 

[vetteguy53081]

I'm little hesitant to add that to my tank. I don't want it to strip out the phosphate. Is this concern valid? I am, however, running ROX carbon in a bag.

Chemipure blue should not have an impact