DIY plans for Coil Denitrator

[howdy20012002]

As I understand it, the concept behind a Coil Denitrator is a simple one.
Basically, as the water travels through the coiled air hose, it loses the oxygen content within it. This unoxygenated water and environment allows for bacteria, which just happens to have an appetite for nitrates, to grow in the container(in about 4 - 6 weeks). Thus, as the water travels through the media where the bacteria is, it loses the nitrate content and then exits back into the tank nitrate free or at least with a lowered nitrate content. it can take a few times for the water to go through the denitrator to lose all nitrates.
if anyone wants to add anything or correct anything please do.
I am far from an expert in this matter.