So far i have lost 3 goldfish i was growing out for my pond and my bristle nose pleco. I QTed all the goldfish for a week and a half before putting them in and they all were fine. Now all my fish are dieing. They show no signs of disease and all my readings are great. I dont understand. This also happened after i took the carbon out of my filters(was only there because it came with them). What should i do??:help2: