I just purchased one of these test kits, I also wonder about the nirate test, my tanks registers at the 40ppm. In the phamplet under nitrate test (page 17) in mine. Under "testing Tips" it states "The freshwate Nitrate test color chart is the appropiate chart to use for testing freshwate aquariums TO which salt has been added. This test kit measures nitrate as nitrate ion or 'total' nitrate''. (Other nitrate test kits that measure 'nitrate nitrogen' (NO3N) will give reading 4.4 times LESS than this test kit.
I don't add salt to my water, does this mean this tes,t in this kit will not test correctly with my water????
I don't add salt to my water, does this mean this tes,t in this kit will not test correctly with my water????