Once I figured out how to open the bottle, everything was much better, in fact, the top lifts, useless to unscrew ... Filter installation is simple and having a witness for the reminder Change is a real advantage. The capacity is a bit limited for a family of 5 against by the result satisfactory for all. We do not were consuming tap water through the filter but the taste is much improved and we convinced. Aesthetics are nice and the water filtration is fast which offsets the low capacity of the decanter.