- Eliminates harmful contaminants and keeps your fish safe.
- One side features a polyester filter pad that removes fine debris and contaminants.
- Second side contains carbon to remove dangerous contaminants along with unwelcome colorants and odors.
- Genuine replacement filter cartridge is specifically designed for use in the Fluval Underwater Filter for Aquariums, Size U4
- Suitable for use in freshwater, marine or reptile environments
Fluval Poly/Carbon Cartridges features two sides for effective chemical filtration, the crucial second stage in the filtration process. The polyester filter pad side filters out fine debris and contaminants. The Carbon side filters out harmful liquid substances, colorants and odors. For freshwater, marine or reptile environments. For U series filter model: U4