What is this?

[Mwhitedesigns]

Hey guys. My tank is about 8 months old and i noticed this little white spot on one of my rocks and can’t determine what it is. This is the only one I see. It has a small pinhole in the middle. It’s a little smaller than the size of a pea.slightly smaller than a quarter inch? Any thoughts?

 

[mraysberg]

I think it’s probably some type of sponge

 

[Dpate]

Agreed, [emoji3476]

 

[road_runner]

Look like a sponge or some other filter feeder animal.
Would keep an eye in thu. While most small sponges are harmless some can be invasive and grow fast.

 

[Phil D.]

Beehive sponge

 

[Mwhitedesigns]

Thanks guys. It’s appeared within the last 2 weeks. I will keep an eye out.

 

[Mwhitedesigns]

Beehive sponge

Should i remove it?

 

[Phil D.]

no, it will help keep nitrates and nitrites down.

 

[Mwhitedesigns]

Thank you!

 

[Mwhitedesigns]

Last question @Phil D.. How big should I expect it to get?