{"product_id":"penn-plax-cascade-300-aquarium-filter-cartridges-3-pack-with-carbon-floss","title":"Penn-Plax Cascade 300 Aquarium Filter Cartridges, 3-Pack with Carbon \u0026 Floss","description":"\u003cp\u003e\u003cstrong\u003ePenn-Plax Cascade 300 GPH replacement filter cartridges are aquarium media made to filter water in Cascade 300 GPH hang-on filters, with activated carbon and poly-fiber floss in a 3-pack.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eActivated carbon helps clear discoloration and odors while trapping pollutants — for clearer, fresher-smelling aquarium water.\u003c\/li\u003e\n\u003cli\u003ePoly-fiber floss screens particulate matter and debris — adding a physical filtration layer.\u003c\/li\u003e\n\u003cli\u003eMade for freshwater and marine aquariums — usable in either type of aquatic environment.\u003c\/li\u003e\n\u003cli\u003eTypically lasts 6 to 12 weeks, depending on tank conditions — helping you plan routine media changes.\u003c\/li\u003e\n\u003cli\u003ePreassembled, slide-in cartridges — designed for quick replacement in the filter compartment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAquarium water can collect visible debris, odors, and other unwanted substances as a tank runs. These replacement cartridges combine a carbon layer with a poly-fiber barrier to address different kinds of water contaminants in one filter insert. They are made for routine upkeep of a compatible hang-on power filter, whether your aquarium is freshwater or marine.\u003c\/p\u003e\n\u003ch3\u003eWhat do the carbon and floss layers filter?\u003c\/h3\u003e\n\u003cp\u003eThe activated carbon is designed to trap pollutants in its pores and help remove discoloration, odors, ammonia, nitrites, and other harmful toxins from aquarium water. The poly-fiber floss screens out particulate matter and debris, providing a separate physical barrier. Together, the two materials handle both unwanted substances and suspended particles. The dual-action media is designed to make a marked difference in water quality within 24 hours.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCarbon supports water clarity by addressing discoloration and odors.\u003c\/li\u003e\n\u003cli\u003eCarbon pores trap pollutants instead of allowing them to enter the water.\u003c\/li\u003e\n\u003cli\u003ePoly-fiber floss screens debris and particles from the water passing through the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhich filter does this replacement media fit?\u003c\/h3\u003e\n\u003cp\u003eThese cartridges are sized for the Penn-Plax Cascade 300 GPH hang-on filter, model CPF5. Each measures approximately 10 x 3 x 7 inches (25.4 x 7.62 x 17.78 cm) and fits the Cascade 300 filter tray. The close fit is designed to leave no gaps where debris and contaminants could bypass the cartridge and return to the aquarium. For the intended fit, match your filter to the Cascade 300 model CPF5.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter type: Cascade 300 GPH hang-on power filter.\u003c\/li\u003e\n\u003cli\u003eModel compatibility: Cascade 300, model CPF5.\u003c\/li\u003e\n\u003cli\u003eCartridge dimensions: approximately 10 x 3 x 7 inches (25.4 x 7.62 x 17.78 cm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow often do I replace the cartridges?\u003c\/h3\u003e\n\u003cp\u003eEach cartridge typically lasts 6 to 12 weeks under normal conditions, with tank conditions affecting its useful life. The preassembled insert slides into the filter compartment, so replacing the media does not require assembling the cartridge. When used with the Cascade 300 GPH CPF5 filter, the cartridges are intended to help protect aquarium water from pollutants.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied as three replacement cartridges for successive filter changes.\u003c\/li\u003e\n\u003cli\u003ePreassembled format slides into the filter compartment.\u003c\/li\u003e\n\u003cli\u003eTypical service life: 6 to 12 weeks, depending on conditions in the tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCan I use these cartridges in freshwater and marine tanks?\u003c\/h3\u003e\n\u003cp\u003eYes. The cartridges are suitable for both freshwater and marine aquarium environments. Their carbon and floss media provide filtration for discoloration, odors, pollutants, and particulate matter in either setting. Penn-Plax also brings over 60 years of innovation in pet products to this replacement media.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended for freshwater aquariums.\u003c\/li\u003e\n\u003cli\u003eAlso suitable for marine aquariums.\u003c\/li\u003e\n\u003cli\u003eDesigned to work with the Cascade 300 GPH CPF5 filter as part of its filtration setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis three-cartridge set suits aquarium keepers maintaining a Cascade 300 GPH hang-on filter in a freshwater or marine tank and looking for replacement media with both carbon and particle-screening layers. Its fit is specific to the Cascade 300 model CPF5, with cartridge dimensions of approximately 10 x 3 x 7 inches (25.4 x 7.62 x 17.78 cm).\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which filter does the Penn-Plax Cascade 300 GPH replacement cartridge fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The Penn-Plax Cascade 300 GPH replacement cartridge fits the Cascade 300 hang-on filter, model CPF5, and measures approximately 10 x 3 x 7 inches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Penn-Plax Cascade 300 GPH filter cartridges be used in marine aquariums?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Penn-Plax Cascade 300 GPH filter cartridges are suitable for both marine and freshwater aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Penn-Plax","offers":[{"title":"Default Title","offer_id":55667390153047,"sku":"B0002DJCGS","price":38.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/4780\/0663\/files\/penn-plax-cascade-filter-cartridges-package.jpg?v=1793375876","url":"https:\/\/bathpetsupplies.co.uk\/products\/penn-plax-cascade-300-aquarium-filter-cartridges-3-pack-with-carbon-floss","provider":"BathPetSupplies","version":"1.0","type":"link"}