Hello, I am so happy to be here and hope that someone can please help me. My fish die within 2 days of buying them. I have a newish tank that was set up almost a year ago. I get my water tested and it is always fine. I've done cycling, water changes, everything I can think to do. My fish die within 1 to 2 days of buying them. Have tried all types of freshwater fish, even tried cheap hard to kill goldfish. Nothing lives in the tank. I have the water test kit not the sticks. I have had my water professionally tested at NC State Exotics and it always comes back fine. I have a 55 gallon tank with two filters, aerator, heater, gravel and driftwood and 3 aquarium decorations. At fist I thought it might be the sand but I replaced that with gravel and they still die. I have bought fish from several different stores and they still die. No one has been able to help me so I have come here for advice. I had a previous 55 gallon tank and never had a problem with it. It's just this tank that is giving me headaches.