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Re: [APD] pH in the filters & root zone

         How about Citrate or Tartrate iron compounds ?

         I suppose that iron-Glutonte will be less toxic to fish
than plain Ferrous sulfate.

         Any comments on Fe-EDDHA, I read somewhere its
better suited to alkaline (Higher pH) environments?


>Flourish Iron utilizes a iron-gluconate complex. Chelation is a form
>of complexation, (a much stronger form of complexation), so the
>principle is the same, it is just not bound as strongly, so it is
>more available to the plants leaves, stems and roots. Also, iron
>complexed in this form is in the ferrous (+2) state which is the form
>preferred by plants as well so it makes it that much easier to
>utilize rapidly.
>-Greg Morin
>Gregory Morin, Ph.D.  ~~~~~~~Chairman/CEO~~~~~~~~~~~~~~
>Seachem Laboratories, Inc.      www.seachem.com     888-SEACHEM

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