Replacement Cartridge for Penguin 110, 125 & 150B Filters - 6 pk (Rite-Size Cartridge: B)
Cartridge for Penguin bio-wheel filters includes a foam pad and Black Diamond activated carbon for combined mechanical and chemical filtration. Patented ribbed backing on the cartridge ensures that carbon is evenly placed, allowing maximum surface area and contact with water for efficient filtration. Won't cause water discoloration.
Place into the slots of your Penguin Bio-Wheel 125 power filter with the black side facing outward and the blue side facing away.