Thanks Mike. I will do a good size water change and add a little of this salt. Is it ok to use the type described? It is what my Husband uses for his palm trees - its called Epsogrow 100% natural epsom salt magnesium sulfate. I have a clown trigger and lion in the tank w/ him.
I have a refugium/sump setup, but am waiting to find a larger tank before I use it.

Thanks again for the help. I am glad to hear the regal pulled through this.