I have heard what you said, darrowj, and thats one of the reason i go Xenia, an easy beginner coral. No matter what I have heard, the Xenia is not doing well...
It is a small fraction of its original size now. What was three large stocks is now a couple polyps attached to a rock. I'm hoping that a few survive and will eventually regrow to the size it was. I went to go to the LFS today and had then test for alk, and bought a test kit. All they had was the API test, I asked if they had any other brands and they said no. The alk was 20 when they tested, so i guess that i raised it too high when i added the baking soda. I did another water change today, smaller, about 1/2 gallon. Hopefully it brought it down a little. I will check it again in the morning.
I think some may make it through the ordeal, the few that remain are still pulsing, though not a strong as they used to. Only one way to find out...