Hello, I need some clarification on how to read the API test kit, since it appears the manner in which I do so greatly impacts my interpretation of the result. The first picture shows my nitrate test held just above the white of the manual. It reads a nitrate reading between 5-10 ppm. The second picture shows my nitrate test held against the manual. It reads a nitrate reading of 40 ppm. Which one is correct? For what it's worth my tank shrimps and snails all look healthy and are thriving. Thanks in advance for your help.