Interesting...
After a month of no supplement besides alk/ca/mg, the cyano is fading, the sandbed has returned to a clean white color, most other spots continue to dissipate. I did a 10 gallon water change last week. I have still running the active gfo and carbon, but they have not been replaced in 8 weeks, so they are becoming less effective, I really do not consider them as filtration at this point. That said, I do feel like my tank is becoming quite stable, most corals are in the 95-100% health range, a few suffered and had spots of cyano, but that too is clearing. I have added some sweet additions, will update with pics later.
Thanks,