I read the label on the copper ick treatment, and it's definitely ionic (free)
copper, not chelated (confirmed this as well with a fellow maast member here in SA who works at LFS).

the color chart for the test kit shows .05 to .25, the color getting lighter as copper concentration goes down. .05 is cloudy, yet somewhat tranparent.

I think I'll keep the rock in a bucket w/emperor >carbon for some weeks
just to be safe

Thanks all