Interesting discussion on Denitrator and would like to share my views on using coil and carbon fed denitrator NR1000 before adopting the use of sulphur-based denitrator.
My thought is to explore the explore the the Schuran Nitrate Filter is one-third of the cost of the NR5000.
The only difference is that it used sulphur beads as the media to encourage the growth of the bacteria which oxidise sulphur to produce sulphate and reduce nitrate to nitrogen gas in the process.
I have been using this in a freshwater environment previously before migrating to a marine application for about 2 years now despite the fact that
it is best suited to freshwater hobbyists than marine reefers.
So far it has been holding well with NO3 undectable under low resolution nitrate test kit.