Using Activated Carbon

Using activated carbon is a means of removing certain organic substances from the seawater. In addition, it prevents the seawater from taking on a yellowish tinge, the substance that causes this is termed gilvin. Activated carbon, which is granular, is often placed in an [tag-tec]aquarium canister filter[/tag-tec] which is also used for mechanical filtration purposes, as a good flow of water through the substance is achieved. Other filters can be used of course. Some aquarists simply hang a bag of activated carbon in a part of the aquarium or sump, but this practice has to be questionable because of the flow of, or rather lack of flow of, seawater through the substance. [Read more]