We carry bulk replacement, refill Coconut Shell Granulated Activated Carbon (GAC). Premium grade coconut carbon media can be used in drinking water treatment for residential or commercial systems. Coconut carbon usually works better than regular charcoal as a filtering media because it outperforms regular carbon in chlorine removal and Volatile Organic Compounds. This replacement coconut carbon is a high quality filtering media. It's a high density filter material with balanced porous structure that creates high filtering performance. It's high quality because it has a great absorption rate to remove contaminants from drinking water. Most common application for granulated activated carbon are removing unpleasant taste and odor from drinking water and chlorine reduction. This media can be backwashed.