Does anyone have any experience with this? I've had two different kinds of cyphestrea for years, and now I'm noticing both of them slowly STNing. Everything else is fine, I have a bunch of SPSs.
Culprits are emerald crabs, asterina stars or possibly my flame angel. That said, i've kept Emeralds for years with no ill effects, and I've never seen them picking away. Nor my 3 year old Flame Angel. The stars I culled back years ago with a Harlequin Shrimp, but they've slowly repopulated - and again, I've never seen or had a problem.
Water params all totally normal.
Flummoxed and sort of pissed.
Jeff