Thank you librarygirl! I ended up doing a 25% water change. The fish have now been in the tank for almost twelve hours, and show no signs of stress.
I added a liquid ammonia remover product. Top Fin. Less than a full dose! About 4 hours before I decided to do a water change, and 2 hours before adding fish.
I am leaving soon to get a proper test kit. No work today so will be able to check my readings every few hours.