aa metal and ph

Lower PH levels, around 7.0 to 7.2 are safer, in the sense that stains are more likely to lift off and less likely to reappear. Higher PH levels, i.e. around 7.5, increase the odds that the metals plus sequestrant will clump up and be filtered out.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.