I haven’t had a lot of luck rescuing Trachyphyllias for some reason. It seems that once they start to go, that’s it. Fortunately, I was able to save this one. Notice the algae-covered skeleton and then the stark-white skeleton. It appears that this coral went through two traumatic events. In order to save it, I dipped it in Coral Rx (as shown below), and then I fragged the dead skeleton off.
I also cut slightly into the healthy tissue to hopefully remove any initial infection. I also superglued the tissue to the skeleton along the cuts to keep it from blowing in the water (it acts like a Bandaid.) The white along the top of the coral is the superglue.
I placed the coral in a low flow, low light area in order to not stress it more. Within a month, it was inflating and eating.
In less than a year, it was fully healthy and even had the start of a baby. This coral is in my display tank (which is why the lighting is different.)
And, it continues to grow!