[CrushnYuba]

Growing crazy: i havent been using calmag. Just when i have it's so sweet it And forget it. It just makes everything so green overnight and i guess allot is because of the nitrate. My fertalizer is a little low in n for veg.

Avenger: that has been so helpful. What do you think that chloride comes from? Do you think there is an added calcium chloride or something?

[Avenger]

that'd be my first guess, yes.

[G.O. Joe]

Calcium and magnesium acetates if acetate doesn't cause problems are soluble, if you don't want any more nitrate or sulfate.

[Only Ornamental]

Originally Posted by Avenger

...
Yes, it is quite common for manufacturers of liquid hydro store fertilizers to be less than transparent on their labels. The label is a guaranteed minimum, and does not have to be accurate.

for example here is an analysis for botanicare calmag+
View Image

and here is what Botanicare guarantees on the label.
View Image

As you can see the nitrogen content is near three times what they guarantee. I guess the plus is all the free chloride they give you with out telling you so on the label.

WTF! That one contains (on a mol base) 5 times more chloride than nitrate! Are they even allowed to do that? The "Derived from" only lists nitrate and sure, chloride is a common contaminant in agricultural grade salts but c'mon 5 times more contaminant than product just ain't right!