Hi,

Can anyone tell me if a high concentration of copper in the water reduces soda ash's ability to raise pH? I have copper-induced vinyl liner staining all around my pool and have ordered a metal sequesterant. So far, I've added 18 lbs of soda ash through the skimmer. All it does is end up on the bottom as a blue silt, without seemingly doing much to raise the pH. Is there a correlation between the two?

Thanks,
Jon

CL 9
pH 7 (could be lower since my CL is way up)
TA 90