In going back through my notes, it was suggested for my mountain water (pH 5.3) to add 0.5 teaspoons of sodium acetate/ liter of water and just a little bit of acid. For 5 liters of room temp water, I added 2.5 teaspoons of sodium acetate and 0.5 mL acetic acid. That didn't do much and added an additional 1.5 mL for a total of 2 mL acetic acid. 70 mL later, I'm not getting it much below 5. I can go back out and do more lowering but I don't trust whatever is going on. The plastic bucket is a brand new one and by using my diabetic 1 mL syringes (they weigh out accurately), I'm not quite sure what else is happening.