Pryitier 8 Pack Filter Cartridge for Marina Slim Filter S10/S15/S20

• Quick installation, Insert the cartridge into the flushing chamber and make sure the filter cartridge fits completely into the chamber
• Filter cartridges replacement works with Marina slim filters, compatible with Marina S10, S15, and S20 slim aquarium filters
• This aquarium filter cartridge replacement cotton is made of thickened biochemical, non-printing and dyeing pure cotton,no chemicals
• Made of dense dual-sided mesh, Better thickness provides better filtration, Ultra-Activated carbon instead of ordinary carbon and also plus ceramic, which can effectively filter
• We recommend that you replace the filters every 2-4 weeks to maintain water quality. (It depends on the number of fish in fish tank)

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