@ JohnnyAirtime: Sounds good - thank you for your help and offering a new frag, if this one doesn't make it. The other coral are still doing fine, so I am hopeful it will pull through.
By the way, good catch on the tiny little white things. There are definitely little white (or gray) specks of something on that particular coral in the picture. The small specks kind of look like a sand-like material. I'm not sure if they are limpets - I will have to investigate further.