Marineland Penguin Power Filter Cartridge Aquarium Filter Insert - Size B - 1 Pack

• Each preassembled rite-size and emperor cartridge has a patented ribbed back that evenly distributes carbon for maximum water
• Highest grade magnum carbon removes more pollutants.
• Fits penguin 125 & 150

INGREDIENTS: Larger Polyfiber Filter Pad. Our Heavy Duty Emperor Filter Cartridge Delivers Two Full Ounces Of Activated Carbon Filtration And 45% More Mechanical Filter Area.