either of these done any harm. I'm a little concerned because j came home today from work to s dead chromis and another breathing really heavy and showing stress marks on its body. I checked every parameter I can, all good. Yesterday I finally added an apex but all I did was calibrate the proves and get it running. Nothing too intense yet. I did also add an alternative reef magnetite shelf and frag station. I believe they are ceramic. I researched and haven't seen anyone say anything but good things about there stuff. I also soaked them in a 50/50 mix of RO water and current tank water over night first. My corals also seem a little more choaked up and pulled in even for evening time but they do that time to time. Other than this all parameters are good and consistent. Is this most likely just coincidence? All the rest of the fish ate and are acting normal. Thanks guys. So much to worry about with these darn reefs but the passion burns

