Review on ZeroWater ZR-004 Replacement Filter Cartridges 4-Pack: Ensuring Clean Water, a Basic Pack by Tracy Knight

I usually take 1-2 packs or two and 1 lasts about a month or so until golden and black beans appear I am guessing from activated charcoal and filter bc that is Where does it come from. I received 4 packs this month so I don't have to worry about running out and having plastic particles in my water but each filter hasn't lasted more than 2 weeks and I'm using my last one in a fraction of the time. I suspect the 4 packs are different as this is the first time I've had a filter that doesn't even last 2 weeks and I'm on the 3rd filter out of a set of 4 where I'd usually still be on 1 Filter would be .if I bought it without packaging 4.