Just wondering if anyone's used Chelated Iron (12-0-0) in their PG? I'm gonna be running some through tomorrow, and am sure that I won't get a response about this until after I do it, but I was going to see how my results run up against any else's? I realize that the water volume may not be up to par, as with Primo Maxx, but I'm trying these things out to see how the results are, until these companies start putting out info on mix rates to run with these machines or until I realize they just don't work the way I'd like them to. So, if you all have any experiences, I'd sure appreciate it. Thanks.