LTWHOME Replacement Foam Sets Fit for All Pond Solutions EF-Booster Fish Tank Aquarium External Filter (Pack of 6 Sets) This is not a Sienna

This is not a Sienna OEM product and is not covered under any Sienna manufacturer's warranty

but it will remain odor free for the life of the sponge

- Type: Compression Union

Custom designed and manufactured for the Fluval 404

Provides both mechanical and biological filtration

LTWHOME Replacement Foam Sets Fit for All Pond Solutions EF-Booster Fish Tank Aquarium External Filter (Pack of 6 Sets) This is not a SiennaPack include: Blue Coarse Foam x 6, White Medium Foam x 6, Black Fine Foam x 6. Custom designed and manufactured for EF BOOSTER fish tank filter. Provide efficient water flow with less clogging for long lasting filtration. Safe, washable and reusable.