I wouldn't. the fluoride filters have aluminum oxide in them and they leak this into your filtered water, one of the excito-toxins you're trying to filter out with the ceramic filters. pick your poison i guess, I have well water so i go without the white screw-on filters. either way these white filters are built to be one-way only and you will ruin them if you back-flow them. (im not impressed with how they work anyway)

i wouldn't yeah the fluoride filters have aluminum oxide in them and they leak this into your filtered water, one of the excito-toxins you're trying to filter out with the ceramic filters. pick your poison i guess, I have well water so i go without the white screw-on filters.

i wouldn't yeah the fluoride filters have aluminum oxide in them and they leak this into your filtered water, one of the excito-toxins you're trying to filter out with the ceramic filters. pick your poison i guess, I have well water so i go without the white screw-on filters. ( i had a brainlord moment and added my reply to this under my original post o.0 )

i wouldn't there are loose powdered chemicals in those filters and tbh i stopped using them 10 years ago because they were leaking chemicals into the filtered water.