I have a 3 stage di setup that I’ve been using for 6 months. It’s the BRS cation/anion/mixed bed setup. I just replaced all three medias with brand new unopened single size packages. I did my initial run after the replacements and I’m seeing an increase in TDS by 8-10 from incoming to the unit compared to after the cation/anion stages. Previously the first 2 stages can take it to 0 and the third is more a backup. Has anyone have experience or insight in to if I got bad media?