[CherylR]

The main difference between the GH booster and what Rex is recommending is Potassium Sulfate. While some descriptions of EI include dosing PS, I read that there is plenty of Potassium in the Potassium Nitrate.

I don't know the answer to your other questions and am interested to hear what others will say. But I have always had to dose extra potassium. Otherwise I see potassium deficiency with out-of-control nitrates.

Cheryl