RO/DI Water - Carolina Fish Talk
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post #1 of 2 (permalink) Old 02-17-2018, 09:20 PM Thread Starter
Join Date: Jun 2010
Location: Conway,SC
Posts: 96
RO/DI Water

I have a 6 stage ro/di system. Water from the tap reads 537 ppm. Water coming out reads 27 ppm. I just changed the ro membrane and it brought it down to 21 ppm. What else can be done to get it to 0? Even tho the system is probably 8 months ols there hasn't been that much water made with the system.
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post #2 of 2 (permalink) Old 02-17-2018, 10:23 PM
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Join Date: Aug 2014
Location: wilmington, nc
Posts: 409
how old is the DI resin. that is what should be polishing the last few ppm out. The RO membrane should last a few years... the DI resin not so much
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