Marineland Bio-Wheel Penguin Power Filter Cartridges are designed to meet the absolute highest standards of water purification performance and operational ease. Rite-Size B carbon cartridges provide superior mechanical and chemical filtration for crystal clear, clean water.
The cartridge mechanically filters water through a pad of double thick polyfiber. Debris and waste particles are trapped, and water is chemically filtered through Marineland's Black Diamond Premium Activated Carbon.
For best results, change cartridge every 2-4 weeks.
Fits: Marineland Penguin 110B, 125B & 150B Power Filters.
Dimensions: 5.8"L x 4.4"W
Placement: Black plastic side faces front of filter, blue side faces back.