coil denitrator

i thought about building one but my nitrates are 0 so i would have no clue if is is working or no. but i would also like to know more about them
 
Read the article AND the comments about it.
Seems like 90% of the folks that tryed it,saw no difference in their water quality.
 
Well I'll admit I made one and it works. I use to have nitrates in the 20 but now 0. I even been doing less water changes. Very easy to make all you need is PVC,tubing,bio balls, and fitting to hold the tubing. Seeing I already had a lot of the stuff just sitting around I figured to give it a try. It's one of though things that some believes work and others don't.
 
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