Alright, when I get a chance - probably tomorrow - I'll re do the whole thing. For all I know I might have put two bottle #1's in instead of 1 and 2. I know it probably isnt competely junk since I do get somewhat normal readings in the tank... so I am going to figure it was something I did in the process. Just wanted to make sure the KNO3 I was using wasnt the problem. Its the API test kit btw. When I decide to buy a new one though, it might be the Lamotte.