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Hey Tom,
Sorry for the bombardment of questions we thought you were trying to have a conversation on how to help with nitrates in your tank and not specifically talk about the Coil Denitrator as a product, and I don't think anyone was accusing you of having a tank full of dead fish and coral. We just want what you want and that is for your marine animals to be healthy and have long lives.
The pictures look great by the way! 
Getting back on topic I think this is a very excellent post and subject to start a debate on with Denitrification. I had attempted to start a post previously on a similar topic. But it really didn't go anywhere.
When I was at MACNA this year there was a company that was actually selling Coil Denitrators Tubes. I had a about a 30 min discussion with they guy. Basically the Coil Denitrators has the same functionality as and works similar to a Remote Deep Sand bed. The Coil Denitrator is a new concept and if mis handled in the slightest bit can really cause a major problem in our tanks as the article even stated. It seem all to dangerous to me.
The article states "The name, “Coil Denitrator” is a misnomer in that it should be called a Tower Denitrator due to the “action” taking place on the surface area of the bio materials inserted within the coils during construction. "
This could easily turn into the Tower of Death.. Futher in that article it states that if the flow is slightly to much that it could turn the Coil Denitrator into a "nitrite production", to slow it could possibility produce hydrogen sulfides. I think its a great idea but, I would have to agree with what Dave initially stated which is basically you're probably better off on trying to correct it naturally then purchase something else that could make problems worse.
Years ago there was another concept introduced to reduce nitrates in your Home Aquariums that I actually tried. My very first tank was rich in Nitrates and Phosphates, and I read an article that someone had posted saying dosing vodka in your home aquarium would reduce the levels of Nitrates.
What was suppose to happen as the article described was that when you first dose with vodka your aquarium would have a bacteria bloom and go cloudy. Which it did. This in turn made my protien skimmer go crazy. After about 24 hours the cloudyness calm down and my protein skimmer was back to normal so I though wow it actually worked. I check my parameters and saw my nitrates going lower. So I dosed my tank every week for the next year. I stopped because the Nitrates had come back and were even higher then they were when I started dosing. After a while of dosing my water would no longer turn cloudy nor would my skimmer go crazy. I eventually did break down and purchase Kent Nitrate sponges which did reduce my Nitrates from 15ppm to about 5ppm. Then a few water changes later I was down to 0 nitrates.
For those of you interested in the Vodka information I believe Eric Borneman wrote an excellent article about it in ReefKeeping Magazine.
http://reefkeeping.net/issues/2004-11/eb/feature/index.php
Corey gave a presentation on this a few months back on Remote Deep Sand beds and there use in the denitrification process. I think the presentation can be found on our website under the articles/videos section. This method is a more natural process and a tried and true process that has been backed by a lot of well known hobbyist and scientist. If I was going to purchase something I would rather spend 10$ on a tried an true method then a new concept method that stakes a risky result.
My two cents! I welcome the constructive debate though! 
Great post Zeeman!
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