+1, except that I generally use straight copper.
How large is the pb? Do you also have other fish in the same tank?
The reason I ask is that you have to rid the QT of ammonia.
If your pb is small and you have a rather large DT, you can try collecting existing nitrification bacteria from the DT water to be used in QT. If you used polyester floss in an HOT power filter box on the DT, or its sump, you would likely see that the floss turns dark. Some nitrification bacteria are collected in the particles of the DT water. If you start now, within 3-5 days you may have collected enough nitrification bacteria for one small pb. You may want to keep collecting in the same way during QT treatment and add such medium into the QT filter.
You can, in addition, start a cycle for the medium intended for QT in a separate container. After three weeks (particularly if you cycle wet-dry) , your cycle may be complete enough for use in QT and you would no longer have to do water change in QT.