Review on Water filter for Philips coffee machine CA6903/10, blue by Barbara Wrobel ᠌

The filter is very expensive. With such a price of a filter, why even a decalcification program? (If you also take branded decalcification liquid 1000 for 2 tablespoons of citric acid dissolved in water CA6700). Probably the filter itself, too, with a cost price like that of a branded liquid, 20. I will look after a Coffee maker with cheaper consumables or with analogues. I tried to replace ca6702, the diameter of the neck came up, but the protrusion in the socket of the water tank did not allow me to put the filter.