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Filstar Bio-Chem Zorb Pouch
Rena Filstar XP BioChem Zorb is included with all Rena Filstar Filters and does much more than activated carbon. Bio-Chem Zorb is a unique blend of ion-exchange resins, scavenger resins and activated carbon. This single cartridge will provide effective chemical filtration and remove the organic pollutants that cause odors and discoloration of aquarium water. Replace monthly for best results.
