Review on 🍃 Kishu Binchotan Charcoal Sticks – 6 Slim Water Filters for Personal Use by Mary Brown

In use for over a year. I bought several sizes. This last order was far from satisfactory. After cooking, I put a large stick in a sanitized glass carafe and put it in the fridge. After 2 DAYS GREEN algae (?) grew in the carafe! I poured, boiled, sanitized, and used store-bought, factory-sealed drinking water to fill the carafe. He inserted the binchotan stick and waited. After 3 days the greens reappeared. It must be a stick, but I finished it anyway. The stick in question had many deep cracks. So deep that I'm assuming the boiling didn't kill what was in the cracks. All other sticks I have received have been smooth and shiny. They worked great.