Penguin 350 Bio Wheel Question..

  • We are currently upgrading MFK. thanks! -neo
You really only need to put 2 of them in. One on each side. The other slots are for a grey plastic thing you can fill with extra filter media that the filter comes with when you buy it new.

You can put 4 of the blue cartridges in if you feel like it though
 
the gray ones are awesome. you can put whatever you want in them. I have polyester quilt batting and carbon in mine.
 
Thanks. Do you know if the blue pads have carbon in them? I can't really tell.

pcfriedrich;1996320; said:
the gray ones are awesome. you can put whatever you want in them. I have polyester quilt batting and carbon in mine.
 
MonsterFishKeepers.com