I need denitrator for my 175.
Simple question:
1- do you have one? Which one?
2- do you like it?
3- does it work well?
AND, what were your before and after numbers of No3 after use?

Simple question:
1- do you have one? Which one?
2- do you like it?
3- does it work well?
AND, what were your before and after numbers of No3 after use?


