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Upgrade your aquarium maintenance with the 1-Month Service Pack for the Bio-CF2 Internal Cartridge Filter. This pack features a high-efficiency, biodegradable Coir Tech™ cartridge made from coconut coir and coated with activated carbon. Designed to last a month, it ensures crystal-clear water and promotes a healthier environment for your fish while eliminating the need for plastic. With effortless filter changes and a perfect fit for your Bio-CF2 model, the convenience of monthly cartridge replacements makes maintenance simple. The biodegradable Coir Tech™ technology keeps your aquarium clean and supports a thriving aquatic ecosystem. Made from coconut coir, a sustainable natural waste product, these 100% plastic-free cartridges won’t release harmful microplastics, helping reduce ocean pollution with every filter change.