Carbon cartridge is specifically designed for the removal of harmful toxins such as Ammonia from you aquarium water. Replacement of your Carbon Cartridge every 6-8 weeks is necessary, to ensure the continued health of your fish and aquarium. Carbon Cartridges cannot be washed and re-used as their effectiveness is limited to the length of time stated above.
Carbon is effective in the removal of toxins from the aquarium water, however the carbon cartridge should not be used as a treatment. Regular testing of water quality and regular water changes should be maintained.