Probably, but I normally don't see that big of a fluctuation with my copper checker. Are you sure you are getting it very clean and have the 10ml mark facing forward each time?Hi. I got my Hanna Checker recently and I tested for copper in my QT. At first it read at 0.32 then a second test immediately after revealed it to be at 0.25. Is it safe to assume that I have a copper level of around 0.27-0.3? Using Cupramine btw
+1 also make sure you get ALL of the reagent into the cuvette.Probably, but I normally don't see that big of a fluctuation with my copper checker. Are you sure you are getting it very clean and have the 10ml mark facing forward each time?
I know I'm replying to a year-old post and know precisely zilch about aquariums compared to @Humblefish, but I do know my chemistry.Sorry for the confusion about the mls. The API kit calls for 5mls of sample water so I use a syringe to take 5mls out of the tank and place in the test vial supplied by the test kit. When all the water from the syringe it places in the vial, it goes past the 5ml line on the test vial.
All of the color kits are pretty inaccurate. Seachem kit is specifically designed to be more accurate for cupramine, their copper product. This is ionic copper with a useful range below 1.0.Why do you say the Seachem kit won't work for Copper Power? The kit says it works on chelated copper and my first measurement at 1.0 seemed accurate.
I don't want to kill my gem tang so if I need a Hanna checker I'll go buy it. But isn't my seachem kit ok?