I have now bought three of these water filters Acala for me and to give away. All those who use this filter to drink, since a lot more water and do not drink bottled water or tap water and bought more. The follow-up costs for a purchase keep in limits a Jahrespaket filter sets will cost 140 euros, or nearly 12 euros per month. I consume daily about 3 to 4 L, though I use a filter always longer than 2 months. You can tell the taste, when the filter "ripe" for exchange. The service of Acala is very good, the last purchase a part was broken on the container, I then sent an email with a photo to Acala and within a short time I had spare. However, a point of criticism is the Mikroschwamm.der small particles to restrain the water upstream of the filter. Often formed under the micro sponge filter in an air bubble which can be eliminated only by lifting the micro sponge. Thus, the function of the sponge is no longer given but the filter itself holds back so even small particles. Despite these criticisms, a strong buy recommendation.
