sick coral

Noticed this about an hour ago, water is testing pristine, 1.024/1.025 not sure what this is, it’s about a week old from LFS, yet to epoxy to rock. Thanks for any suggestions or what this is and how/if treatable. Don’t want it spreading!! Thank you

Hello, Everyone! I've had this toadstool coral for about a year now. About 4 or 5 months ago, I moved it from my nano tank into my 75 gallon. about 2 or 3 weeks ago, it started developing a hole. I wasn't too concerned since the coral seemed happy. I just assumed it was splitting. But now the...

Hi, All! I bought my bubble coral a few months ago from my local fish store. It had been in the store for months without an issue, but now I've noticed that parts of it are turning brown. It started out as a few spots, and I was hoping it was just stress from adjusting to a new tank. But it...

Has anyone had a Zoa colony do this? It looks like the polyps are melting and turning brown. I have looked carefully for pests and visually there is nothing to see. They are just slowly melting away. Any advice on how to save them?

I bought a pretty big purple candy cane colony a couple weeks back and for the last week the tissue has been receding on a few heads and it hasn’t been plumping up like it was when I first got it. Does anyone have an advice on anything I could do to possibly help it recover would be greatly...

It's me again... I feel like I need a dunce hat ;Sour with this scoly I'm trying to salvage. I posted last week to ask about a hitchhiker which turned out to be just a sponge (ty @Crabs McJones)....but now I've got these super weird string looking growths?? I've never seen anything like them in...