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Ensure your aquarium water stays crystal clear and healthy with our 1 Month Service Pack for the Bio-CF Mini Internal Cartridge Filter. This pack includes high-performance, biodegradable cartridges made from sustainable coconut coir with a protective layer of natural latex and an activated carbon coating. Perfect for maintaining optimal water quality for one month, this pack is 100% plastic-free and eco-friendly. Enjoy effortless filter changes with a perfect fit for your Bio-CF model, and the simplicity of monthly cartridge replacements. The bio-degradable coir tech keeps your aquarium sparkling clean and supports a healthy environment for your fish. Made from coconut coir, a natural waste product, these cartridges are 100% plastic-free and won't emit harmful microplastics. Reduce plastic pollution in our oceans and make a positive impact with every filter change.