Iron gluconate 98% VS Fe Gluconate ( 12.46% ) please advice - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 02-29-2016, 12:52 PM Thread Starter
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Iron gluconate 98% VS Fe Gluconate ( 12.46% ) please advice

hi all

i want to dose iron to my tank and i have found that most of us uses the Fe Gluconate ( 12.46% ) , but i have only a source for ( Iron (II) D-gluconate dihydrate. 98% )

My tank is 150 L and i am using the EI method so according to this Yet Another Nutrient Calculator i should be dosing 601 mg Fe Gluconate (12.46%)

so how much if i want to use the ( Iron (II) D-gluconate dihydrate. 98% )

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post #2 of 4 (permalink) Old 02-29-2016, 07:18 PM
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Fe gluconate is 12.46%, not 98%. That's impossible.
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post #3 of 4 (permalink) Old 02-29-2016, 11:16 PM Thread Starter
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look at this ( Iron(II) D-gluconate dihydrate 98% | Sigma-Aldrich ) i really dont know what this 98% refer to
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post #4 of 4 (permalink) Old 03-01-2016, 12:30 AM
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98% refers to the purity. It's 98% Fe gluconate, not 98% Fe. So the actual Fe concentration would be 12.46% of 98%.
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