I need help! My tank has tested off the charts for copper. It's mostly due to my stupidity for using a return line fitting that rusted upon recent inspection during a big maintenance review of my 29 gallon tank/ 12 gal sump. I suspect this has infused my tank with high levels of copper for more than a month! The good news is I do not have any corals, fish only and as of today several dead snails:angel1: . My question is other than a copper/heavy metal sponge and water changes what can I do to rid my tank of this problem? I spoke with my LFS and he also said I need to basically start over on the entire tank with new live rock and a new sand bed :bouncebox. Is that true? Or will the sponge be enough? I want to add corals eventually, but more importantly do I have to replace 30+ lbs of live rock which will leach copper back into the tank? Any help would be much appreciated.