No metals in the tank, the only thing I did do and shouldn't have is I had to measure the stop parasites stuff and I dipped the spoon in the tank to get the rest off, would that have done something? and what to do next? Is there a test for metals? I have one tang, two clowns, and 5 anemones, and two things I have no clue, they are some kind of crabs maroon and white stripped, large pinchers, and arms in front that move like they are boxing.Thanks guys for the help!