Worm growing on my rock?

[saraeelove]

I noticed That one specific rock has certain little worm. I tried To scrape them off and they feel rough like rocks. Then few weeks later, today, i see One of the worms opening up like if it’s a flower? Or a mouth?

What is this? And is it dangerous ? Should i dump The rock ?

Sorry for the blurry pictures. But these are the best shots.

 

[Big G]

Picture please so we can help you better. Some are harmless filter feeders; others are invasive.

 

[saraeelove]

Picture please so we can help you better. Some are harmless filter feeders; others are invasive.

Sorry, i forgot. I just Uploaded the pictures

 

[Big G]

Little blurry, but looks like "Feather Dusters" They are harmless filter feeders. Does it look like this?

 

[saraeelove]

Little blurry, but looks like "Feather Dusters" They are harmless filter feeders. Does it look like this?
View attachment 670499

Yes! Looks like it. Should i leave Them alone then?

 

[Neo Jeo]

Yes! Looks like it. Should i leave Them alone then?

Yes they are great! Long as it looks like that. Filters the water for you, you can even buy big ones.

 

[Marlon2024]

Yes! Looks like it. Should i leave Them alone then?

Signs of a healthy tank

 

[saraeelove]

Signs of a healthy tank

That’s great to hear!