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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Reverse Osmosis Water Filtration
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Old 08-18-2005, 07:19 PM   #1
Fatboy
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Default Reverse Osmosis Water Filtration

A neighbor just installed a reverse osmosis water filtration system, and I was wondering if it would be a bad idea to try that water for beermaking.

Thanks - Paul

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Old 08-18-2005, 08:01 PM   #2
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There should be nothing wrong with RO water.

It's distilled water you want to stay away from.

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Old 08-18-2005, 10:55 PM   #3
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RO (Reverse Osmosis) water is not ideal to use for brewing by itself, but is great to use for "water profiling". By starting with a "basic" water that is void of brewing salts, it allows the brewer great flexibility to add specific salts back as needed to reach the desired profile. I use RO water at a rate of 2/3 added with my regular water (moderately hard) to create suitable water for European lagers, etc...

Note: Be certain the RO filter you use for brewing has a carbon pre-filter to remove organic chemicals & chlorination.

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Old 08-19-2005, 12:38 AM   #4
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...or you could just add some gypsum...

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Old 08-22-2005, 04:30 PM   #5
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I am super new to brewing and ordered a Mr. Beer "dump in and stir" kind of kit and used RO for my first brew. I am also into salt water aquariums so I have an RO at the house and figured it couldnt hurt.

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Old 08-26-2005, 04:16 AM   #6
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Most of the "dump and brew" kits contain some salts, and ph contollers.

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Old 08-26-2005, 02:49 PM   #7
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RO water is stripped of allmost all minerals, It gets everything. I have a home RO system and use it for a few brews. I went back to using just my normal softened water for the most beers.

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