Goodbye water filter-full of microbes, which remove calcium from the water and all other interesting minerals, and losing 1/3 of their effectiveness in one week. And that should replace filters regularly (expensive and not environmentally friendly).
The binchotan filter impurities, pesticides, chlorine ... remineralizes and magnesium water, calcium ... The water tastes good! From my readings, you should let it be binchotan 1h minimum. Four hours is better. Eight hours is the top.
After three months of use have to do it boil 10 minutes, he returned for three months.
At the end of 6 months can be used for deodorizing cat litter, shoes, cabinets .... or else break it into small pieces and put it in the garden (fertilizer).
A stick is given to filter 1L of water. Personally I put in a plastic bottle 1.5L, it worked well, although this has perhaps taken a little more time for the water to lose the chemical taste it when leaving the valve.
In short: I recommend ......