Low PH

I read your post--this article is pretty good:

http://www.advancedaquarist.com/issues/june2002/chem.htm

Sodium carbonate (your pool additive) is the same thing as washing soda and won't up your pH directly--it increases alkalinity. Can you just increase the amount of kalkwasser you're using? That would do the trick. I'd raise your alkalinity too--keeping a higher alkalinity will help you maintain your high pH. For this, the pH up will work, but I'd stick to plain old washing soda or baking soda.

Christine
 
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