Activated carbon is an essential filter media for every aquarium. It can effectively eliminate odors, detoxifies harmful metals, purifies and softens the water
Rinse the activated carbon with water, then put it into the filter casing, it will start functioning immediately. Please take out the activated carbon from the filter while your fish is treated medically. Refit back after fish recover from illness.
Duration: 3 months, should be replaced with new one after.