wrote in message
...
what exactly is the difference between NO3-N and just plain NO3. Ingrid


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
================================================== =======

I'm not sure what you mean. NO3 with a minus sign is the nitrate ion.
There is no such thing as NO3 (without the charge) in water.