I use well water too. The pH is 8.3 to 8.5. I don't make any attempt to change it. If you use it as is, you can do water changes with no worries. Odds are good that your water is well buffered and will resist your attempts to change it. If you manage to add enough pH down to reduce your pH, it will jump right back up again with the first water change.
Leave your pH as is, and work on keeping your water quality good. Regular water changes, avoid overfeeding, etc. Odds are very good that your fish with thrive.
I would only mess with pH if you are using live plants (I've never had luck there, so maybe pH is a factor, maybe it is my black thumb...), or if you are trying to breed fish with very specific water requirements. To have a pretty tank and healthy fish, clean water with stable chemistry (even if the pH is really high!) is much more important.
