Rite-Size C Filter Penguin Replacement Cartridge 6-Pack Fits Power Filter 170, 200, 275, 330, 350 And 375 Bundled With Petwealth Aquarium Maintenance Chart By Acentus

The cartridges arrive pre-assembled ready for use. Fit perfectly into existing Penguin housing making the process of filtration effective. Activated Carbon is scientifically known to remove impurities from natural substance. Special backing makes sure that the carbon is evenly spaced for better coverage. Aquarium Maintenance chart is a Peel and Stick chart that you can put anywhere youd like to keep track of dates and pH levels.