New Life Spectrum fish food and copper

[Myka]

I like the math. Although I'm sure it's safe to assume that daily exposure to copper would be damaging at a lower level than 0.4 ppm.

Originally Posted by midgetwaiter

So you didn't read the link then....

They don't provide a number because it's below the detection threshold.

The link says we won't detect it on "our" kits, so what they're saying is hobby grade kits won't detect it. That can be true of most of the levels of the trace elements in additives. A laboratory should be able to tell us exactly how much copper is in the NLS food, it's just that NLS is running around the answer by distracting us with bogus excuses like our kits won't measure it. That's enough to satisfy most people to quit asking questions.