Something growing on my hammer base.

[JoeyzReef]

anyone know what this is? Should I take it out or just leave it?

 

[vetteguy53081]

anyone know what this is? Should I take it out or just leave it?

Pest anemone known as aptasia
You may be able to scrape off into a net and discard otherwise you can with syringe or pipette, inject either lemon juice or better yet. . kalkwasser powder mixed with tank water into a paste the consistency of toothpaste and inject into the very center core and it will melt away

 

[mushrommy]

anyone know what this is? Should I take it out or just leave it?

Looks like aptasia, cover it with super glue and you'll save yourself some trouble.