About This

• Compatibility: Designed specifically Replacement for Fluval C4 series power filters, the Bio-Screen filter cartridge perfectly fits the C4 series external drip box, making it suitable for both freshwater and saltwater aquariums, meeting the needs of various aquariums
• Precise Customization: Each piece measures 12 x 4.5cm, and is 3.5 mm thick, perfectly fitting the C4 series power filter biological chamber. A pack of 6 is economical and durable, reducing the need for frequent replacements
• Easy Maintenance: The bio screen replacement media is highly durable and is recommended for replacement every 4–6 weeks for aquariums with high-density aquariums or saltwater aquariums. Replacement can be done every 3–4 weeks for highly aquarized or saltwater aquariums. No tools required, just plug and play and flush the housing
• Safe Material: The replacement fluval c4 filter mat is made of high-density foam material, providing excellent surface area. It is fluorescent-free and resistant to seawater corrosion, making it safe and durable, helping to maintain stable water quality and supporting the healthy operation of the aquarium ecosystem
• Dual Filtration: This biological media filter mat not only provides physical filtration to effectively trap suspended particles, but also features a unique honeycomb texture that evenly distributes water flow, improving filtration efficiency and ensuring balanced water flow