02-03-2010, 04:10 PM
we add.. as per the suggestion of don thomas, head of the center for the study of active volcanoes at uh hilo, who recently ran a study of the acidity of water in catchment systems in many communities around kilauea, a box of baking soda once in a while. small tank.. 2500 gallons.. was tested at a ph of 3.7.. and said to be one of the lowest results in the study. now it's a variable that is constantly floating around.. more vog.. more rain.. add more. less of this or that.. add less. one eventually just gets a sense of what neutral feels like.. how your hair feels after a shower etc. the trick is to dilute the backing soda in such a way as to get it to get mixed with the water, rather than just fall to the bottom of your tank, which is what happens if you try to just dump the whole box in at once. good luck