Hey guys, I ordered a digital PH reader and it arrived broken on me, and im hassling the guy on ebay to do an exchange with me. But I mean I have these three plants now that are two weeks old and sucking down water, and I am currently watering them with water that is 7.2 PH because I have nothing else I can do atm, I was relying on this PH reader that was coming off ebay, and figured the high PH water was better then nothing . Well heres my question -- I am going to purchase gallon size bottles of spring water called Zephyrhills Natural Spring Water. The PH of this water is 7.7, can anyone tell me how much vinegar I should add to lower the PH to 6.7 in the gallon size bottle? I know this is a tough question, but it would help me out tremendously, I am just trying to get within shooting distance. I included the water analysis I found online for further info. Water Analysis (parts per million) Bicarbonate 140.0 Chloride 11.0 Fluoride 0.2 Sulfate 8.0 Calcium 58.0 Magnesium 3.9 Potassium 0.2 Sodium 5.1 TDS 185.0 pH 7.7 Thanks a ton. So far the plants are not showing any negative effects from the high PH water, but I would definantly like to start doing things correctly as soon as possible. Thanks again.