Hi Elaine, I do have high alkalinity water and I did order the high alkalinity version of the fertilizer you mentioned....I will let you know if I have any different results than the stuff I was using before....who knows! So many variables. But that's why I got this fertilizer....because of the high alkalinity of my water, it piqued my interest. I had never heard of a manufacturer that tailored a fertilizer to suit the nature of the water being used.
