I have used the Newton Fluoride and Limescale Reduction Gravity Water Filter for approximately 18 months and thought they were a good filter, previously I purchased directly from Newton Filters and from Amazon. I purchased some replacement filters at the beginning of June 2025, upon receiving the filters I noticed that the packaging had changed, however the filters looked the same. I set the filters up as per instructions and as I had previously, I noticed straight away that these filters were not working well, the previous filters gave scum free tea for several months, these have made no difference what so ever. I reached out to Fine Filters Customer Service and gave them a generous 2 weeks to reply and have received no response, going forward I will not use Fine Filters, I'm unsure if they are using genuine filters, cheap copies or have a bad batch of filters, because they don't respond I will buy filters from Amazon.