She could have possibly been confused. Our lfs
sells tablets that are used for transporting fish for long durations. They also fill your fish bags with oxygen if you are going to be transporting for long distances. When we moved and knew that it was going to be a good 5 to 6 hours before the fish would be able to be put in a different container, we stopped by the lfs
to pick up a bottle of dechlor and they used their air pump to fill the remaining portion of the fish bags with oxygen.