Cuprisorb is a powerful adsorbent of copper and heavy metalsr cuprisorb will remove copper more rapidly and efficiently than carbon and is thus ideal for emergency copper removalr it extracts all types of copper from water and if in continuous use from the gravelsubstrate bed as wellr cuprisorb will allow maintenance of invertebrates in copper treated tanks by removing copper leaching from substratesr directionsuse 500 ml for every 1 200 l 300 gallons to remove up to 15 000 mg 12 ppm