the LFS checked the water and found trace NO3. not quite the color for 0, not quite the color for 5. the ammonia came up at 2 ppm which is what i got this morning when i checked. i reread the test instructions and noticed that i hadnt been shaking the tube for a full minute as directed, but still got a 0 reading when i retested. maybe its the reagent? i remembered to buy the dog food but forgot to get a new test kit today, so back to the LFS tomorrow.
the tap water reads 0 ppm ammonia.