Handcrafted according to ancient Japanese tradition, Kishu Binchotan charcoal originates from the Holm tree, a hard oak that grows in the forests of Kishu. Through a signature heating and cooling process, Binchotan charcoal gains chemical absorption properties, making it is an amazing method of water purification that's been used for hundreds of years.
Placed into a jug of water, the charcoal absorbs chlorine and other chemicals from the water while releasing healthy natural minerals into it. Simple as that. The charcoal is a effective purifier for about three months. When it starts to turn dull-grey, you simply break it up and mix it some potting soil, where it acts as a great plant fertilizer and pH regulator.