Kishu Binchotan is an amazing method of water purification that's been used for hundreds of years. Handcrafted according to ancient Japanese tradition, this stick of 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.
Placed into a jug of water, 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.