This particular charcoal, no matter how much you rinse it, releases blackness and sediments that ultimately ruin the quality of the water. It's as if the charcoal is very soft and as it rubs, it creates the melting of the coal and the blackness. Similarly, the same product from another company did not have this behavior. You rinse it a little at first and then it stops releasing blackness.

I bought the same product from abroad at approximately the same price. If I can find it here, I don't see why I shouldn't buy it from here, as long as the price is the same or even lower.