Fluval U3 Poly/carbon cartridge

Fluval Poly/Carbon Cartridge has two unique filtering sides that combine to provide thorough and 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, colourants and odours.
Key Features :

Polyester/Carbon cartridge provides thorough and effective chemical filtration
Polyester filter pad side filters out fine debris and contaminants
Carbon side filters out harmful liquid substances, colourants and odours
For freshwater, marine or reptile environments
Contains 2 Poly/Carbon cartridges
For the Fluval U3 Underwater Filter,