Black lump on acan

[Kingkold020]

Just got my acan from the cherry corals live sale in and I wasn’t too sure if this was just flesh or a hitch hiker.

 

[Kingkold020]

It was an asterina starfish. I quickly removed it fro the tank.

 

[Cell]

Pic is too blurry. I'd try scraping off or super gluing over it if I was concerned.

 

[Cell]

Now I see the star shape.

 

[Kingkold020]

Now I see the star shape.

One more question. I added in my hammers as well and one of them is letting some stringy substance from it. Is it dying or are they sweepers?

 

[Cell]

Looks like slime or something. Hammer sweeper will look like the rest, just super long.