When LPS decline in our tanks I move them to areas of low flow and low light to help them recover quickly without the intensity of flow and light penetrating at the flesh.

I also like ReVive Coral Cleaner to help them recover, also great to use on freshly fragged corals that did not get clean cuts.

I do not like CoralRX for treating declining specimens. I feel it's too harsh and better used as a dip against pests...perhaps it's all in my head though because of the intense smell.