SMS cleaning
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Hi need advise running a merlin 3stage purification unit and a sta-rite 618 resin tank which takes approx 7.5litres of resin ,I live in a very hard water area approx 330ppm at start ,I am having huge problems as resin is lasting approx two 500 litre tank fills and is climbing to 5ppm ,I need advise why this a happening if I change resin and comes out at 0 ppm at the start ,I purify the water in my garden first then transfer to vehicle .many thanks Lyndon