cupramine?? ammonia??

[marie]

I haven't heard anything about throwing off test kits but I do know copper is hell on the bacteria needed in the nitrogen cycle.
When I use cupramine, I don't bother with trying to cycle the tank before I add fish. I just do 50% water changes daily and if necessary twice daily ...having a small hospital tank helps

Oh and everytime I do a water change I add enough cupramine to bring the copper concentration back to proper levels