This past few weeks all my euphyllia seems less happy, and this week I lost a small two head hammer. One head disappeared overnight and the other just a couple days later. Today my wall hammer is receded and I am afraid it is on its way out. I see no brown jelly, and my parameters posted below are totally stable - like one year and no changes. I have had all these hammers for at least a few months, and some longer. They don't grow, but otherwise are usually totally happy and open. Any thoughts?
SG=1.027 (a few months ago ran 1.025)
nitrate= 50
phosphate=0.5
KH/Alk=9.3
pH=8.15
Mg=1230
Ca=400
SG=1.027 (a few months ago ran 1.025)
nitrate= 50
phosphate=0.5
KH/Alk=9.3
pH=8.15
Mg=1230
Ca=400