1) Not too expensive 2) I have heavily iron loaded deep well water and a brine tar water system; I love the concept of the activated carbon filter 3) the whole house filter comes before the watermaker 4) as its use contributes to the accumulation of solid particles in the faucets, water heaters, pipes etc. now "zero"! 5) but at 10 microns with carbon, the water pressure drop is your key to replace it every 10-20 days depending on usage; Don't expect a full month unless you get to 20 microns
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