• Crystal

Jessica6754

I often have such spots on the angel and some surgeons in my fish tank. These are the consequences of contact with sharp objects, like SPS corals. Usually, they go away quickly.

Thomas5021

I hope it's nothing serious.

Sherri1320

I think it will be fine, it will pass...

Jacqueline5976

Did calcium suddenly rise sharply by accident?

Nicholas

It was a long time ago, and I don't know why; I probably didn't have enough calcium back then, meaning it was dropping rather than rising.