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Achieve long-term water quality with our 3 Month Service Pack for the Bio-CF3 Internal Cartridge Filter. This pack contains three biodegradable cartridges, ensuring three months of superior filtration. Made from sustainable coconut coir and activated carbon, these cartridges promote a healthy aquarium environment and reduce plastic waste. Effortless filter changes with a perfect fit for your Bio-CF model, combined with the simplicity of monthly cartridge replacements, make maintenance a breeze. The bio-degradable coir tech keeps your aquarium sparkling clean and supports a healthy environment for your fish. As a sustainable choice made from coconut coir, a natural waste product, these cartridges are 100% plastic-free and won't emit harmful microplastics. Every filter change helps reduce plastic pollution in our oceans and make a positive environmental impact.