Are those really filters? They are not filled with charcoal. The holes are big. Water passes in seconds, meaning there is very little filtering. They are "dusty". In fact, there is nothing good in these cartridges. I've used other non-Mavea filters before and they've been fine. . . but they are out of stock so i decided to try these. . . but they are just awful. I strongly recommend you to use "real" Mavea filters.
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