I'm using Seachem Cupramine to treat my fish for Velvet. I have them in a QT
and I have removed the carbod from the filters. I still have the bio-wheels on the filter I'm using and the blue carbonless filters. I bought the Test Kit that comes with it but I keep getting a reading of 0 when I test for copper. I have been treating for two days at the recommended dosage. Still I get a zero reading. I tryed the little test dill that they inclued in the kit "sorry I can't think of the name of it right now"....and it tested positive. Not sure if my eyes are bad or the color was actually what it was, but it's did not really look like it completely tested at .5 like the instructions said it would. Anyway. Anyone have an idea why I keep getting a zero reading? Is my Bio filtration removing the copper?