Aquatics

I noticed part of the GSP was starting to get black patches and it was getting bigger. I’m guessing it turned black from being dead? Thought about trimming off the black spots and moving it to another spot in the tank. Maybe it’s not happy where it’s at?

I’m also thinking about treating it with Coral RX Coral Dip after trimming?

All my other corals seem fine.

I would appreciate any advice. Thanks.