Marina i25 Replacement Cartridge Twin Pack

£2.99 £5.29

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Contains two replacement cartridges for the Marina i25 aquarium internal power filter. These quick change cartridges (simply pull upwards on the handle to remove the old cartridge) should be replaced every 4 to 6 weeks. It is recommended that a biological enhancer such as Fluval Cycle be used every time a cartridge is replaced to seed the cartridge with active bacteria.

Each cartridge contains two areas, one containing activated carbon to remove dissolved organics and water discolouration and one containing ammonia removing zeolite both sections wrapped in an outer of fine polywool to remove particulates for crystal clear water.