Correction- the RO water from walmart is 7.0 and tap at 7.3. I mixed some Grow Big and CalMag in a gallon of tap water and remeasured it and its at 6.8. I used the RO water to test my runoff and it was at 6.9. So maybe the PH was ok before Im not sure though. I wonder if it is just a calcium def and/or rootbound