Vendeur: oxleymo (524) 100%, Lieu où se trouve: Bromley, Kent, Lieu de livraison: GB et de nombreux autres pays, Numéro de l'objet: 201730083665 Iquatics premium filter media. This is my last box Activated carbon for salt water or freshwater. Boxed Weight 1 kg per box. Pellets as seen in picture. Activated carbon had thousands of tiny holes and crevices which the water passes through whilst carrying minute particles, waste, dyes, and impurities. This process is called physical absorption. Advantages of using smaller particles are cactivated carbon works faster Larger surface area Effective where the water flow is faster Perfect for external filters Can combine postage where possible. Please ask.