Filter our Fluoride and Chlorine

[gparv]

I have 2 Culligan 640 undersink filters and would like to now filter out fluoride and chlorine. What filter can I use with this housing?

[waterfilters]

The D-40 from Culligan is an excellent choice for chlorine removal, but I do not have a cartridge that will work in your system for Fluoride removal. The 640 housing requires slimline cartridges, less than 2.5" in diameter. We have a cartridge, but you would need to change to a regular housing that accepts standard size cartridges. Something like this Pentek 158643 3G IB Slim Line #10 Clear 3/8" Housing with Pressure Release and here is the fluoride reducing cartridge: Crystal Quest 2-7/8" x 9-3/4" Fluoride Filter Cartridge The only other way to reduce Fluoride, is to upgrade to a reverse osmosis system.

Thank you,
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