Red1313

Title basically explains the question. I'm thinking more for canister filters or some sort of filter where the media is contained since Styrofoam floats.

aquarist48

Hey Red. I'm just guessing but I would have to say no on the styrofoam balls. It isn't porous and it wouldn't be able to contain the beneficial bacteria that is needed. Let's get some more responses though before you make a decision. I could very well be wrong here.
Ken

Lucy

I'd agree with Ken. After a while the styroforms will break down and create a mess in your tank.
Red, you're always thinking!

Red1313

thanks guys
I wasn't sure. I know that styrofoam plates are used for spawning with bubble nest builders, and I think it's basically inert. Thought it would be an interesting solution.

Psychlist1972

If you go to a craft store, they sell a different kind of foam ball; the kind used to make mobiles of planets for science class and whatnot. Those are rough and porous, so they may work.

You may still have problems with them breaking down over time, though.

Pete

griffin

i think the non porous kind might work if you were to break it apart and use the bits inside a larger container or mesh bag. the kind at the craft store, however, tends to break down pretty quick in water.