I did not know that about uva so thanks for the info.
I hear this all the time, and I'm not saying your wrong, but I'm curious how people know this? Does copper sulfate occur in them naturally? I've always been told not to feed goldfish and I don't use them as a staple food source but I've never had trouble with it, other than my fish sometimes getting bacterial infections (now I'm a little more wary about buying feeders).Please Do not feed your Alli Snappers Goldfish!
They contain Copper Sulfate. Your AST will slowly die.