are foods containing copper invert safe?

[Reef Puffer]

Originally Posted by Zoaelite

To add to this, most of the tissue we feed to our tanks contains some level of copper. Copper is required in small amounts, its when the molecule becomes present in larger concentrations that invert poisoning occurs.

And a little proof, read the copper content of 1 ounce of mixed mollusks and squid species.
http://nutritiondata.self.com/facts/...roducts/4197/2

Even more proof:
Copper is the oxygen binding molecule in many invertebrate species hemocyanin protein (Their form our our iron dependent hemoglobin protein).
http://en.wikipedia.org/wiki/Hemocyanin

ya i type slow... thanx

[Zoaelite]

Not too sure on that one, copper oxide is a widely used food supplement but its certainly in there for the fish, not the coral. I would personally stay away from it.

[fishytime]

I understand that several natural foods contain trace amounts of copper, but no fish food that actively adds copper as an ingredient, in any way shape or form, will make it into my reef