Kitan
Member
Okay knowledgeable peoples, I need your help! I want to include bio rings and purigen in my filter, but the room in the Marineland Penguin 200 filter is fairly limited. I'm using my cartridge because I have two new ones on hand. Is this an effective way to utilize them? Cartridge with floss first, followed by carbon, and the purigen stacked on top of the bio rings behind the cartridge. No room to layer them one in front of the other ?
