On my large angels I do a 20 minute drip, an hour Prazi Pro dip in my water in a bucket, but then a 10 to 20 minute fresh water bath and then into a 100 gallon Rubbermaid tub for QT for a few weeks before going into my display. Most of my fish follow this routine but in trying to pair my flame angels I thought if I QTed the female she might start turning so I followed my protocol but then added her to the tank directly which I know was a gamble. And I did a second time in making my harem. One thing we overlook in the summer is the temp in our cars in transporting our fish from the store to home. Try placing a thermometer in your car, you will be surprised on the heat on your seat. I like to use a Styrofoam box to transport in the summer.