Yes definitely not normal.
Salt and big daily water changes for a week or some chemical medication.
It could be from the dead cat that was in your well. It might have introduced some bacteria into the Betta's tank, or there was ammonia in the tank from the well water.
Salt and big daily water changes for a week or some chemical medication.
It could be from the dead cat that was in your well. It might have introduced some bacteria into the Betta's tank, or there was ammonia in the tank from the well water.