I even mix different brand nutes together, half strength of each. That way, if there's any dificiencies in either thenit will probably be made up by the other. It's doubtful they'd both be deficient in the same micronutrient or whatever. Also, I get the benefits of the wetting agents and humic acid etc in the AN while using a less costly brand for half of the major nutrients. I also sometimes just alternate the brands by themselves each watering or two rather than mixing.