Wanted to give an update on what's going on.
After the suggestions, stopped GFO and removed it from my system slowly. Removed Activated Carbon. My phosphates are gradually increasing. After I removed to moved to 0.25, then to 0.38 then to 0.45.
But Two of my Stylo and Birds Best are Lot better now. But unfortunately lost two of Birds Nest during this period of GFO time.
I was always under the impression that Phosphates kill corals. But I see Phosphates reduction killed and phosphates increase is making them better. When they were doing good phosphates was 0.58. then added GFO and they started getting stress.
Just keeping my Calcium, Alk and Mag in line.
Cal - 460. Mag - 1390, KH - 9.3. Phosphates - 0.45
I use Hanna for testing. Any Thoughts.