Soft Coral contracting

[Flaxxy]

My soft leathers have been contacted for a week now. All water parameters appear to be in check, CA, Alk, PH, MG, salinity, temp. Does anyone know why this would be?
80gal reefer, 30 gal sump, AI Hydra 52 (screenshot of settings attached)

Thank you

 

[CoralB]

Your phosphates are at zero may or may not be their issue . But You need to get them up to around 0.05 ish or you will have another issue on your hands. Wouldn’t hurt to get your nitrates up to around 10 ppm