OASE Replacement Filter Cartridge for the BioStyle Filter (4 Pack) bioplus thermo 50 6 L) every three days

6 L) every three days (alternatively

giving it a rich golden appearance

May be supplemented daily with chopped vegetables

For use in humid environments (IP54)

OASE Replacement Filter Cartridge for the BioStyle Filter (4 Pack) bioplus thermo 50 6 L) every three daysThe Replacement Filter Cartridge Set of 4 for the BioStyle 20, 30, & 50 and BioStyle Thermo 30 & 50 5 in 1 Filtration The BioStyle Multi Stage Filter Cartridge provides 5 in 1 filtration which ensures clean, healthy, and clear water for your aquarium No Mess Maintenance The disposable filter cartridges are easily removed and replaced Contains four replacement cartridges that fit inside the chamber of the BioStyle filter. Quantity needed depends on the