Jadenlea Posted September 25, 2015 Report Share Posted September 25, 2015 My RO machine spits out water about 6.6 PH But this week I noticed the PH In a tank was sort of low and tested some of the stored water. It tested 5.7!!!! How did this happen? Is it just a build up of CO2 from capped stored water? Quote Link to comment Share on other sites More sharing options...
JamesHe Posted September 26, 2015 Report Share Posted September 26, 2015 Just ignore it. RO pure water has none buffer capability. it would swing big Soothing Shrimp 1 Quote Link to comment Share on other sites More sharing options...
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