My turbinaria peltata (pagoda cup coral) seems to have been attacked by an algae that is selective of this coral alone.
For the last many weeks I have been taking this coral out of the tank, scrubbing the algae off, dipping coral RX, dipping iodine, then back in the tank. It seems to have slowed, but not stopped the algae attack.
It definitely kills the polyps unfortunately. Since this started, I have lost most of my coral.
This morning I decided I would chop it up in hopes to rescue something before the entire colony was killed off.