Scubabum
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I have really hard water where I live and was thinking of having a soft water system installed on my house. Any problem running the soft water through the RO/DI or should I have a bypass installed? Thanks in advance.
House Soft water system question..
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dbl
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It's actually better to use a softener before your RODI unit. It acts as a pretreatment for the RO and will extend the life of your membrane.
dbl
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Here is my understanding. The softener adds sodium or potassium as it removes the calcium and magnesium. Your TDS may in fact go up slightly. But it's easier on the membrane as they are designed to remove the salts.
Randy Holmes-Farley
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The DI will deplete a bit faster using the softener (because the membrane rejects calcium and magnesium better than sodium), but the membrane may last longer since calcium carbonate deposits on it is a frequent failure mode. So using the softener first is usually recommended.
