The funniest part is my mother in law has gold fish and the odd different type of fish. Every spring they go out in an out door tank, come in during the fall. Generally by the time she gets to setting up her indoor tank for the winter the outdoor tank has a layer of ice on it. She uses 2 indoor tanks during the winter. When it becomes time to clean it she completely does a 100% water change and sets up the second tank with all new water. She uses zero products in her water, no water conditioner, Prime or anything
She doesn't have the three insert filter system, just the basic one large foam type filter, she doesn't use a heater, has never used a kit for testing ammonia levels, literally nothing AND SOMEHOW she keeps the same fish for years.
One living to ten years old!
And I'm over here doing daily or weekly water changes (always keeping some to maintain what little balance I have) adding products to try to balance water, the whole shebbang ��
She literally told me last week that she think she people add too much junk to their fishes water, that that causes more issues then anything.... I'm like HOW IS THIS POSSIBLE ��
Oh it'll come, learning experience for me !