Barr: "While I do not suggest that folks not test, it's always a good idea to test, I question a real need for a 60$ NO3 kit." Thank you for saying that. I think this is true because of the reasons you stated, and especially true now that Aquarium Pharmaceuticals has come out with a $6 NO3 test kit that is good enough. Use the other cash for a CO2 system if money is tight. TW