Difference between ro water and distilled? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 12-19-2012, 05:01 AM Thread Starter
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Difference between ro water and distilled?

I understand how the processes differ but how does the RO product differ chemically from the distilled product.

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post #2 of 3 (permalink) Old 12-19-2012, 05:58 AM
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I would think distilled is purer... But i guess you never know what could condense with the water. Maybe nothing... R/o needs sets of filters that work less and less well over time.. so eventually... Something sneaks in there too..

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post #3 of 3 (permalink) Old 12-19-2012, 06:23 AM
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Distilled water is only as good as its pre filter source & the type of source water you have. They do not work as well if you are using surface water that is hard. Trust me I own a good one 1 had to give up on it . too many issues & then there was the stainless steel tank that tasted a little funny. And yes r/o have problems also. regular filter changes are needed but run fairly consistent & do not need electricity to run. They will also beat the pulp out of even a good still in production. But given the right conditions & softer water with proper pre filters they will yield a purer water. 99.9 verse 97-99 % pure in r/o but that will depend on how good the stills pre & post filters are. Also an r/o membrane can last a long time, maybe years pending on usage.
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