I think if there was a such thing as "growth stimulators" for plants they would be well known and everybody would be using them. There is no magic potion. No hocus pocus. Growth stimulators are NPK and micros. That's it. Also I may be wrong but how could this stuff contain everything you need when you aren't supposed to mix P with Fe? It must not have one of them.
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Do it all the way or don't do it at all....

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