http://www.cityofwasilla.com/departm...uality-testing
Lots of Calcium in Wasilla water, up to 78ppm. Ca and Mg uptake are antagonistic. either way you got it fixed..
muni water here has 30ppm calcium purposefully put in to prevent pipe corrosion.
I also get some MG deficiency in older leaves. i should re-formulate to take that into consideration.