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Humus, humic acid and natural chelating agents



 Subject: Humus, humic acid and natural chelating agents

Thanks to Bill, Craig and Dave for their posts on this subject.

> Humic acids are removed by activated carbon.  There are clear 
> implications for fate of trace elements in aquaria, perhaps Espe
> freshwater aquaria, in that statement.

That's why few aquatic gardeners use carbon in their systems ;-)