I added a little water. The starting PH was 2.0 now it is looking like 4.0, what do I do to lower it a bit? Might I add some acid blend?
Now it looks like it is 3.0, so what do you think?
I think I would stop doing anything to adjust pH! It doesn't appear to me that you have a way of accurately measuring pH. You said your starting pH was 2.0, and you added enough water to raise it to 4.0. However, a solution with a pH of 2.0 is 100 times more acidic than one of 4.0. I assume that you did not add 100 parts of water! I think you should just roll with whatever you have or else make darn sure your pH meter is accurate and calibrated.
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