What are these?

[Noodles]

Hi,
I'm kinda new here, I bought a used tank in December and have been reading a lot here on canreef!

I've got some little white things starting to show up everywhere, they're just under 1 cm long. What are they?
http://i1249.photobucket.com/albums/hh517/sheppner/259C2970-89C1-4D84-8EBF-DF3C58CC298C.jpg (http://s1249.photobucket.com/user/sheppner/media/259C2970-89C1-4D84-8EBF-DF3C58CC298C.jpg.html)

[Slyguy00]

Pretty hard to tell from your pic, Kinda looks like a sponge though

[SeaHorse_Fanatic]

Sponge. Good for the tank. Natural filtration.

[kien]

Pretty hard to tell from your pic, Kinda looks like a sponge though

Agreed. Looks like a pineapple sponge.

[Noodles]

Cool, thanks for the quick replies!!