Finest-Filters 8 x Compatible Foam and 8 x Compatible Polycarbon Carbon Filter Cartridges to fit Fluval U3 Internal Filter

• 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 U3 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.

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 U3 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.