{"product_id":"penn-plax-cascade-300-gph-replacement-filter-cartridges-3-pack","title":"Penn-Plax Cascade 300 GPH Replacement Filter Cartridges – 3 Pack","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Penn-Plax Cascade 300 GPH Hang-On Replacement Media cartridges are designed to keep your Cascade 300 GPH filter performing at its best, helping you maintain a healthier, more stable aquarium environment. Sold as a convenient 3-pack, these cartridges are a practical upgrade for ongoing filtration.\u003c\/p\u003e\n\u003cp\u003eWith activated carbon and a poly-fiber floss barrier, these cartridges work together to support clearer water and reduced buildup of common tank pollutants. Activated carbon helps reduce odors and discoloration by trapping substances in its porous structure, while the floss layer catches fine debris before it has a chance to circulate back into the tank.\u003c\/p\u003e\n\u003ch3\u003eKey benefits and what to expect\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to fit the Cascade 300 GPH hang-on filter model CPF5 without gaps for consistent filtration.\u003c\/li\u003e\n\u003cli\u003eActivated carbon filtration helps address odors and water discoloration, contributing to a cleaner-looking tank.\u003c\/li\u003e\n\u003cli\u003ePoly-fiber floss provides an extra barrier to screen out particulate matter and debris.\u003c\/li\u003e\n\u003cli\u003eNo assembly required; installation is straightforward into the filter's interior tray.\u003c\/li\u003e\n\u003cli\u003eCompatible with freshwater and marine environments, offering flexible use across setups.\u003c\/li\u003e\n\u003cli\u003eTypically lasts 6–12 weeks under normal conditions, depending on bioload and tank conditions.\u003c\/li\u003e\n\u003cli\u003eWhen paired with the Cascade 300 CPF5, they work together to maximize filtration protection for your fish.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUsage tips\u003c\/h3\u003e\n\u003cp\u003eFor best results, check water parameters regularly and replace cartridges when you notice reduced clarity or odor changes. The fit is precise, helping prevent debris from bypassing the media and returning to the tank.\u003c\/p\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThree replacement filter cartridges tailored for the Cascade 300 GPH hang-on filter.\u003c\/li\u003e\n\u003cli\u003eConsistent, dependable filtration with a focus on ease of use and aquarium health.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Results can vary by tank size, bioload, and routine maintenance. These cartridges offer a convenient upgrade to your Cascade 300 filtration setup.\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: Will these cartridges fit my Cascade 300 GPH Hang-On Filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, these cartridges fit Cascade 300 GPH Hang-On filters (CPF5) and come in a 3-pack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the cartridges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under normal conditions, replace every 6-12 weeks based on bioload and water quality.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Penn-Plax","offers":[{"title":"Default Title","offer_id":53555928301897,"sku":"B0002DJCGS","price":35.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/1781\/9465\/files\/penn-plax-cascade-300gph-media-pack-3pk-blue-cartridges.jpg?v=1766369616","url":"https:\/\/petvita.co.uk\/products\/penn-plax-cascade-300-gph-replacement-filter-cartridges-3-pack","provider":"Petvita","version":"1.0","type":"link"}