what's a bio bag?

[Convict2161]

Also to point out. That huge bad of poly fill cost me 7 bucks. Seemed like a good deal so I went for it. Still have a bunch from the secret Santa.

 

[MyDaughtersKeeper]

Still kind of new to some of this. But the poly fill, you just stuff full of whatever you want?

 

[Convict2161]

Still kind of new to some of this. But the poly fill, you just stuff full of whatever you want?

No, you add the poly fill to whatever filter you want. It catches all the really really fine debris in the tank. It works wonders. You just pull a piece of and put in the filter.

It's like pillow stuffing.