Does anyone have problems with determining nitrate readings with the salifert kit? I mean, which light should it be under when viewing the color chart ...bulb or sunlight? - LOL.
From what I can tell my Nitrates are undetectable, but due to the lighting where I test (on the bathroom sink directly under the strip of bulbs in the vanity fixture) it is hard to tell if I am seeing a shadow on the test vial. I end up checking it under different lighting in my house.
It would be nice if Salifert made a Nitrate test kit like the CA, ALK, etc..