Small white worms

[Emma_fish]

Can anyone help to ID these small white worms please?
they are on my power heads + filter, could they be nudibranchs maybe?
They seem to be hanging on to the sides of things like a caterpillar would

this is the best picture I can get at the minute

 

[AydenLincoln]

They look like pineapple sponges. Harmless hitchhiker that thrives in high nutrients/if you add too much food or are overstocked etc. Personally I think they are cute.

Pineapple Sponges: Do They Stay or Do They Go?

Pineapple sponges create plenty of debate. What are they? (A common question) And do you need to get rid of them? Curious? Then read on!

www.saltwateraquariumblog.com

 

[Emma_fish]

They look like pineapple sponges. Harmless hitchhiker that thrive in high nutrients/if you add too much food or are overstocked etc. Personally I think they are cute.

Pineapple Sponges: Do They Stay or Do They Go?

Pineapple sponges create plenty of debate. What are they? (A common question) And do you need to get rid of them? Curious? Then read on!

www.saltwateraquariumblog.com

That’s good to know that they are harmless , thank you!

 

[GHOSTLY]

I believe pineapple sponges? They don't do much and my fish eat them for some reason so they should be ok. Might clog your pumps and stuff up though