Thread: Scott's 135 gallon display tank build
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  #49  
Old 09-06-2014, 06:14 AM
Gp Scott Gp Scott is offline
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On my ro- di unit I shut valves and let it pressure up and back flush then opened valves back up now it's ready zero. I also checked it with hand held meter and it read zero so I'm not sure y it was reading 2 ppm
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