What is the carbon made of? Coal, wood, coconut shell? coal base is preferred for most applications. It has been proven that it's the most balanced of the carbons when it comes to removing chemicals, taste, odor, chlorine. But there are a few people who likes coconut based carbon for color removal, or ozone reduction. Coconut is also harder. Carbon can become coated easily with iron and/or hydrogen sulfide, which will drastically reduce its performance and life.

Reprinted with Permission from Safe Water Technologies, Inc