Newsalt here is a link to a DIY de-nitrator coil intended for use with marine aquaria: http://www.aloha.net/~hqf/indexdondenitrator.htm
and here is a link to a commercial nitrate reductor by aquamedic. http://www.seaquestmarine.com/cgi-bi...&SEARCH=search
I'm not sure that the u-tube design would work well in saltwater or not. From past discussions, coil de-nitrators can work but are usually difficult to get the flow rate tuned to where it works well. I don't know anyone that has tried the Aquamedic product.
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walt
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...and I thought woodworking was an expensive hobby.....
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