OASE Replacement Filter Cartridge for the BioStyle Filter (4 Pack) bioplus thermo 50 Feature and automatic safety shut

Feature and automatic safety shut off and are fully submersible

There are five total stages of filtration–mechanical

Formula made without added sugar

For use in humid environments (IP54)

does not significantly discolor aquarium water

OASE Replacement Filter Cartridge for the BioStyle Filter (4 Pack) bioplus thermo 50 Feature and automatic safety shutThe 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