Just saw this post. Did you figure out if Rowaphos caused copper in the tank. I tested both RO and tank water. RO water is free of any copper/heavy metals but tank water has heavy metals and copper is high. I cannot understand what could be leaching copper into the aquarium.Just had my first Triton results and it has confirmed that even after nearly 2 years of trying to treat the phosphate leaching from my old live rocks, I still have a long way to go. Also detected some copper so will check all my magnets. Are the other elements something to worry about and overall, is this good/bad compared to other people's tests?
https://www.triton-lab.de/en/showroom/aquarium/auswertung-b/icp-oes/64195