here is my penny worth.

Not sure what you are growing in. If it is Hydroponics, and you are useing Reverse Osmosis Water.. Then for sure have the CalMag+.. It is such a need. And I would think the same thing is true for Soil. RO-- Reverse Osmosis water takes everything out of the water, even the good minerals that water usually has. CalMag+ just replaces these minerals.

These companies do not add these minerals to their nuts, because they are not sure if you use tap water, well water, or RO water. CalMag+ is my friend....

I was taught this just a few days ago from my grow, and these kind people of this Forum corrected it for me.