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- Oct 25, 2018
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I have been dosing copper power over last several days Total 19ml in a 20 gallon tank. So according to calculator should not be over 1.75ppm However, it is flashing high at 5.0 (high range checker by the way. I am doing it exactly as directed. I do have experience with other hanna checkers as I use them for alk, calcium, nitrate etc. What possibly could I be doing wrong? Maybe somebody had same problem. THe fish including a leapord wrasse shows no ill effects. PLease aHELP