How to choose Fe fertilizer - The Planted Tank Forum
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post #1 of 2 (permalink) Old 05-12-2019, 10:11 PM Thread Starter
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my aquarium has 7.15 PH and I inject co2 until I the pH goes to 6.
I want to know if the fertilizer of iron which I have is ok?
Is the CSM+B trace elements, with Fe 7,8% and EDTA Chelated.
I read somewhere that EDTA chelated is up to 6.0 PH.

Last edited by fitos100; 05-13-2019 at 09:43 AM.
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post #2 of 2 (permalink) Old 05-17-2019, 10:43 PM
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EDTA is probably going to be fine for you, if you were to add extra iron I would probably choose something like DTPA 11% iron which should cover you at higher ph ranges.

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