mnccnm
Fish Fanatic
Anyone know of another, more acurate way of testing for nitrates other than the API kit? 10ppm looks the same as 20ppm, and 40ppm looks the same as 80ppm. Even diluting the sample 1/4 to 3/4, the test result can't be determined between 10 or 20, so time 4 = 40 or 80. This is ridiculous.