B brak Active Member Oct 10, 2008 #1 I tested the brand highland once i had filled my aerogarden and discovered it was as high as 8.5. I had to add some lemon to lower it to 6. Is all spring water this high in Ph.
I tested the brand highland once i had filled my aerogarden and discovered it was as high as 8.5. I had to add some lemon to lower it to 6. Is all spring water this high in Ph.
