Funny I did a search about this and came up empty. Now I see it at the bottom from 2014. So because I was doing a water change before it rained tomorrow I needed to get rid of the water in my rain barrel. So instead of draining it into my 300ish gal pond I just did what I normally do: See below....I just might test the PH from the rain barrel for the next time. I love is site. Thanks for the info.
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