The Kilcher Homestead is a 600 acre Pioneer Homestead that has been protected for perpetuity via a ConservatIon Easement. The Kilcher Family has also preserved the Historic Cabin and site as a LIving Museum.
Yes, negative pH is possible, but not in water as a solvent. The range of pH in water is 0 to 14 (to be more precise, it is -1.7 to 15.7, but for simplicity's sake, we start with the usual values.) Thus, what pH indicates is the ability of the acid to form H3O+, which can then donate a proton.
If it's too low, add a pH decreaser. pH. pH is a basic measure of acidity or basicity in your water, and it's one of the most important factors in balancing your pool. On a scale of 0 to 14, 7 would be considered neutral with an ideal range falling between 7.2 and 7.6.