When you MIGHT have to adjust your pH
What if my pH is really high?
If you pH coming out of the tap, or after Reverse Osmosis is still about 8.0, we suggest that you using pH down and adjust your water to 7.0, then mix Supernatural Brand Nutrients. Certain mineral’s will not dissolve in when the water is too alkaline. So it best to first pH your water to 7.0 then mix.