Hello reefers I recently added a BRS triple DI saver to my ro unit I got a big water storage container and began filling it up. The cation resin has barely changed at all, the anion resin was only about 1/3 color changed and the mixed bed had no color change at all. I have produced 80 gallons of water continuously( I fill a 16 gallon plastic bin then Transfer into the large water container), my last batch has produced about 8 gallons and I looked at my DI and the mixed bed was completely exhausted! My question is should it have all changed so quickly? My anion resin is still only about halfways. The tds meter was showing 14 in stage one, 3tds in stage two and 3tds in stage three.