fungia plate coral

These corals have been having a lot of problems lately, I have noticed. Sadly once it starts to disintegrate, there is no return. My mom tried to save hers a few months ago (she tried practically everything) and nothing worked. It died within 2 days. Sorry to bring bad new but don't think there is much you can do at this point.

I've heard corals make mucous to clean themselves, what happens if you blow off the white stuff with some water?