Anytime you finish a quarantine session whether successful or not, sterilize the tank and all equipment before use again!Bought another hawkfish on the Nov. 2nd and place in QT and few hours later it was displaying the same symptoms of heaving breath. Adding API General Cure and CP. Within the hour it was dead. Can someone tell where I went wrong? Would like to add a couple more fish to our DT but want to do it the right way with QT first. These of the pics of the last Hawkfish.