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RO filter

I would say bad only going on mine I have a 450 gpd going into a static tank mine was reading 20 after a year so changed membranes now running at 4 before di tds is over 300 ..use on average 2000 litres a week .

 
Bad , I got a new one last year, tap water ppm was 180ish. It brought it down to 001ppm until September, it's been about 002/3 until last month now it's 004 ppm .

 
Think I read once your ro is producing less than 90%waste . your membranes need changing . 300 down to 30approx

10inch vessel approx one litre ..

 
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