In my opinion this is a great filter with added minerals. I have an Apec RO 90 series and added it to the system as a final filter. The taste has improved a lot! No kidding - really! Yes, the taste of the reverse osmosis water has improved. I'll buy more when it runs out. The filter also includes 1/4" threaded connectors, so you only need 1/4" tubing to connect everything. Finally, I know it's working as the total dissolved solids went from 6 to 16.
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