DIY Sulfur Denitrator

[Therbligs]

Has anyone tried a DIY Sulfur Denitrator?

The Korallin looks like a Ca reactor with Sulfur and Ca stacked in the chamber. It's on the pricey side.

http://www.marinedepot.com/aquarium_filters_korallin_biodenitrator.asp?CartId=

 

[skydancer]

Try midwestaquatic.com
they have a similar model that's cheaper and comes better assembled.
I bought one and started it a week ago. It seems fine so far.