Our replacement cartridges are constructed with blue polyester on both sides and contain extra amounts of
professional grade carbon. Our carbon has been air-vacuumed, which results in a lighter more absorbent filter cartridge.
These
cartridges come pre-assembled, filled and ready to be used and will out
perform the OEM cartridges provided with the filters!
Fits Models:
Marineland Emperor 280
Marineland Emperor 400
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Aquarium Supplies 
