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#1
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![]() Tap water is measuring 173 ppm. It is a 75 gpd system.
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#2
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![]() Going with those numbers (173 TDS feed & 22 TDS RO) your membrane rejection rate is 87%, well below the rating I reckon.
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Mike 77g sumpless SW DIY 10 watt multi-chip LED build ![]() |