Vendeur: gmaqua (22.155) 99.3%, Lieu où se trouve: London, Lieu de livraison: Worldwide, Numéro de l'objet: 371583607039 Brand: AZOO, Les Détails: AZOO SUPER ACTIVE CARBON Chemical filter medium for freshwater aquariums Standard Delivery (Royal Mail 1st Class) Made of walnut-shell active carton specific for treatment of water, no impurities, and highly absorbent.2. I can eliminate the smell and yellow substances in the water efficiently, and decomposing dissolvable organic substances, carbolic acid and tannic acid, and the residual chlorine in tap water.3. Having a longer average working life-more than one time that of the ordinary active cartons; 250g can treat 4. 4. 200liters of water for over 40 days.4. Active carbon has a neutral pH value and has no impact on water quality.