Quote:
Originally Posted by kingevil
i have used api trate tests before and have found them to be easy to use and somewhat accurate. is your expired?
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There is no expiry date on the bottles, I threw the cardboard away when I first got it. The problem I see is the first colour change is at 5.0ppm so anything under that just reads 0. Do you know if you can double the drops to test inbetween 0 and 5? Or is unrealistic to get these values in a reef tank.