Penguin 110/125/150 Cartridges

Each pre-assembled Rite-Size cartridge filters water through a double thick polyfiber pad which traps more dirt and debris, faster. The cartridge is packed with super-efficient pure Magnum Activated Carbon. It keeps working long after most carbons stop.

It's better than a bag! Just shake and rinse. The patented ribbed backing evenly distributes carbon for maximum water-to-carbon contact. No bypass, no "tea-bag" effect. Just crystal clear, crystal clean water. For best results, change at least monthly. Three cartridges per bag. Each cartridge measures approximately 4-1/2" W x 6" H. Designed specifically for the Marineland Penguin 110, 125, and 150 filters (with or without the Bio-Wheel). Rite-Size "B" Cartridges.