Activated carbon is used in aquaria to bind urinary and humid substances; pesticides and metabolites and similar residues and by this means to provide for clear water in the aquarium. Moreover; by using activated carbon the content of ozone and chlorine of the water is reduced. Activated carbon is particularly well suited for the pretreatment of tap water against turbidity caused by suspended particles and to filter any waste materials caused by drug treatment. During a drug or algae treatment you should renounce the use of charcoal in the filter. However; after the treatment it is essential to remove any residues with its help.
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