HS aqua Carbon Superactiv L removes organic substances, dissolved waste products, dyes, fragrances, proteins, toxic gases such as chlorine, etc. Due to the enormous absorption capacity and the long duration of action (up to 6 months), HS aqua Carbon Superactive L can be used in both fresh and sea water and in every type of biological filter. HS aqua Carbon Superactive L can be used excellently for removing medicines from the aquarium water.