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Proper Iron Level in Planted Tank

1789 Views 1 Reply 2 Participants Last post by  mistergreen
In my 90 gallon planted tank what is the proper ppm of FE (Iron) that I want to have to have good plant growth?
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it's immeasurable with the test kits we have.
Iron along with other micro-nutrients are in the fractions of ppm.

Just follow suggested dosage by commercial products or the the EI, and other dosing methods.
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