What the highest tds count that di will polish off?Tap in to merlin 280Out of merlin 70 and then through di vessel (normally about 40 so ordered new merlin pre filter)Can't get tds below 20Is 70 to high for di?
my tds is 70 odd d/i only 11 litre vessel should produce thousands of litres. theres a resin calculater somewhere on the net tells you how much water you will get depending on tds.