Haquoss blue filter cartridge

Replacement cartridge for aquariums haquoss blu 3.8 and haquoss blu 9.5. This cartridge is made of white fiber to retain impurities and activated carbon inside it to clarify the water and eliminate unpleasant odors. For correct operation and optimal filtering, we recommend cleaning the cartridge in use every two weeks by simply rinsing it under running water and replacing it every month.