Copper testing

new2scene

New member
I bought the Aquarium Pharmaceuticals copper test and i'm confused. I'm dosing with Coppersafe. it says 5ml for every 4 gallons. i have a 10g qt and I have dosed 12.5. I did the test and my copper is showing 0.5ppm. Should this be right? and what should the proper reading be in order to kill ich?

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new2scene

New member
I have looked on the Mardel website and if I'm correct it says readings should be 2-3ppm. anyone familiar with using Coppersafe and AP coppertest?
 
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