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re: sulphur odor

Scott wrote that his substrate yield sulphorous malodors whenever he disturbed it.

Wouldn't the odor be sulfur dioxide (possibly sourced from potassium sulfate)?  In any event, wouldn't it be an indication of aerobic conditions down under?  If there is enough oxygen in the water and the upper parts of the substrate (in this case, probably above the sand), then aerobic conditions aren't necessarily bad.  Scott's plants seem to agree, even if his wife does not.


Scott H (no relation :-)


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