Is highly effective and consists purely of plant substances. It adsorbs toxic and harmful substances, as well as particles of dirt quickly and efficiently from fresh and marine water aquaria. The steam-activated Carbon superaktiv in pellet form is extremely fine-pored. 1g corresponds to an inner surface of more than 900m_. Carbon superaktiv must be removed from the aquarium before administering any medication. Inserting the filter material in Net Filter Bag is recommended for convenience.