Penn-Plax Cascade Hang-on Power Filter Replacement Cartridges 3 Count Per Pack

The Penn Plax Cascade 300 GPH Filter Cartridges with Activated Carbon will improve the quality of your aquarium water and keep your fish healthy. This 3 Pack of Filter Cartridge Replacements is designed to fit the your Cascade 300 GPH hang-on power filter and will last 6 to 12 weeks under normal conditions. Activated carbon is great for freshwater aquarium filtration. It has the ability to not only visually clear the water but trap pollutants in the pores of the carbon so they do not enter the water. This filter cartridge will remove ammonia nitrites odors and other harmful toxins from your aquarium to keep it healthy. It has a poly-fiber floss barrier which screens out particulate matter and debris for an extra layer of protection. Within 24 hours you will see a drastic difference in the water quality. Each filter cartridge is perfectly measured to fit into the Cascade 300 Hang on Filter tray without any gaps preventing debris and contaminants from entering back into the water. This filter cartridge is s