Pond Carbon will remove colors, odors, medications and other impurities from your watergarden. Pond Carbon should be placed in a area of good water flow, this could be inside a skimmer filter, BioFalls®, stream or other area of high water flow. Place pond carbon into carbon mesh bag and rinse under tap water for about 2 minutes or until most of the carbon dust is removed. Pond Carbon should last about a month or two depending on the filtration and fish load. Pond Carbon Carbon Mesh Bag ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!