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Carpe Noctem
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9,817 Posts
Depends on what is in it. Hard, soft, high TDS, low TDS; they all can benefit from a RO/DI unit;)
 

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2,052 Posts
+1. ro/di water with a quality salt is about as close to replicating the real thing. Unless you live by the ocean and can collect the real thing.

Welcome to TRT!
 
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