Features
Finest-Filters compatible replacement foam and polycarbon filter cartridges are made from the same material as the Fluval originals.
These filter pads are made to fit the Fluval U4 range of internal filters
The plain filter sponges contain the biological cultures, biologically and mechanically filtering the aquarium water
The polycarbon filter cartridges remove small particles from the water, and the activated carbon chemically filters the water of impurities
Please Note: This is not a Fluval Product. This is a Finest-Filters alternative which serves the same purpose as the original brand.
Discover More Best Sellers in Aquarium Pumps & Filters
Shop Aquarium Pumps & Filters
Aquarium Pumps & Filters - Penn-Plax Cascade 600 Filter Replacement Bio-Sponge (1 Sponge) – Provides Physical and Biological Filtration for Freshwater and Saltwater Aquariums
AquaClear Media Basket for 50/200 Power Filters
Aquarium Pumps & Filters - AquaClear Media Basket for 50/200 Power Filters
Aquarium Pumps & Filters - Aqua Clear AquaClear Foam Filter Inserts, 3 Pack – Replacement Mechanical and Biological Filter Media for 70 Gallon Tanks
Aquarium Pumps & Filters - Marineland Maxi-Jet 600, Multi-Use Water Pump And Power Head, Fully Convertible (ML90510), 160/750 GPH
EA Premium Carbon Infused Filter Pad 18x10 - Cut to Fit for Aquariums and Pond
Aquarium Pumps & Filters - EA Premium Carbon Infused Filter Pad 18x10 - Cut to Fit for Aquariums and Pond
Aquarium Pumps & Filters - The Filter Pro Cut Replacement Skimmer Waterfall Mat - 19" x 19" x 1.25" Thick Beige Coarse Filter Media to Fit Popular Brands, Made in USA
HiTauing 8 Packs PF-L Carbon Cartridge for PF20, PF30, PF40 and PF75 Power Filters
Aquarium Pumps & Filters - HiTauing 8 Packs PF-L Carbon Cartridge for PF20, PF30, PF40 and PF75 Power Filters
Aquarium Pumps & Filters - 6 Pcs Carbon Filters for Model 4 - Thickened and Durable Replacement Filters to Absorb Unpleasant Odors Control Damp from Pets and Keep Home Fresh


