Hello all, what’s everyone’s go to for copper testing, that seems to have the best results. Will be using fritz CopperSafe so itS Chelated Copper. Got some Fish coming in from LA not DD and I need to get them in display as soon as possible for some algae issues starting to upcrop that I don’t like. So they will be going in cycled QT w/ copper that I have running instead of my OT for corals and inverts were I would put DD ones for two weeks to make sure they are eating.