Penn-Plax Cascade 300 GPH Hang On Filter Replacement Media, 3 Pack - Dual-Sided Aquarium Filter Cartridge with Activated Carbon & Poly-Fiber Floss for CPF5 -Fresh & Saltwater - Blue & Black, ‎10x3x7in

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 replacement filter is designed to fit 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 suitable for both freshwater and marine environments. When used together, the Cascade 300 GPH Filter Model CPF5 and Cascade 300 filter cartridges provide maximum protection against water pollutants from harming your fish. Sold in 3 pack.

• Sparkling Water Made Simple - Dual-action aquarium filter cartridge designed for Cascade 300 GPH hang-on filters. Activated carbon removes discoloration and odors while the poly-fiber layer traps particles - keeping your fish tank water clean and clear.
• Healthier Habitat for Fish - These filter cartridges provide efficient filtration for both freshwater and marine aquariums, helping maintain a balanced and stable aquatic environment.
• Easy Upkeep, Every Time - Each filter cartridge typically lasts up to 6-12 weeks depending on tank conditions. The preassembled design allows quick, clean replacement with no messy setup-simply slide the cartridge into the filter compartment for effective filtration.
• Compact Fit, Consistent Flow - Perfectly measured to fit Cascade 300 model (CPF5), these black or blue filter cartridges prevent debris bypass. Dimensions: approximately ‎10 x 3 x 7 inches. Sold in a convenient 3-pack for easy replacement.
• Penn-Plax Legacy - With over 60 years of innovation, Penn-Plax creates expertly crafted, dependable pet products designed to enrich habitats, inspire creativity, and promote the health and happiness of pets everywhere