This is the best charcoal I've ever used! Water flows through coal. Most of the OTHER carbon is tightly packed and only a small amount of the water actually flows through the real carbon while the rest of the water flows through the top of the filter. NOT with this carbon. These are specially shaped granules that do not stick or bind together, requiring the water to flow through the charcoal, resulting in the water and charcoal sharing a huge space on the surface of the charcoal. The carbon seems to last a few months, I've had it for two months now and I still haven't changed it. The water smells nice so I don't see the point of changing it yet.
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