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Post by Carl on Mar 11, 2014 18:30:26 GMT -5
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Post by Carl on Jul 30, 2015 15:05:38 GMT -5
I have updated the "Aquarium/Pond Answers" article about Hydrogen Sulfides in Aquariums Here is a snip from the article: "One study showed that even though sulfate reduction (the production of hydrogen sulfides from Nitrates/Sulfur) took place maximally at ¾ inch (1-2 cm) depth, free hydrogen sulfide was present only below a depth of 2-1/2 inches (6-7 cm), above which Fe++ (Iron) was available for precipitation as iron sulfides. So with this study in mind, keeping your substrate sand bed mixed at depths deeper than 2.5 inches and/or minimally aerated can prevent this process. This will also allow for better de-nitrification (lower nitrate levels) as nitrate will be allowed to better permeate the deeper sand depths allowing for more nitrate reduction and less sulfur reduction."Reference: www.aquarium-pond-answers.com/2008/11/hydrogen-sulfides.htmlCarl
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