So, I picked up my tank and saw this corkscrew like things in the setup. Now I've never had a tank filter like this one, So I'm learning a lot of things on here about them. Anyway I asked the guy who owned it what they were for(thought maybe they were used to hold bacteria or something like that) but he didn't know what they were for. Here's a pic maybe you guys can help me out. 

It's filled with them, I figured I would just take them out and use what I see a lot of people on this site use.


It's filled with them, I figured I would just take them out and use what I see a lot of people on this site use.










