The authentic Marina Bio-Clear replacement cartridge is designed for the three Marina Slim filter models (S10, S15, S20). Ideal for goldfish, it contains zeolite and Ceramitek filter media for optimal filtration and a healthy aquarium.
Zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the highly porous ceramic-based Ceramitek filter media maximizes biological filtration.
This disposable and easy-to-use cartridge should be replaced every two weeks to ensure optimal results. To ensure the continuous presence of beneficial bacteria, never replace all cartridges at the same time.
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