Just because you don’t have any issues does it mean you’re not killing beneficial bacteria. But either way that’s bad practice because the one day you forget the dose your water conditioner before you start putting water in you’re definitely going to kill all your beneficial bacteria. Can you explain the reasoning behind leaving it all on are you worried that the fish can’t be without filtration for an hour. I have everything I need to shut off on a power strip I hit one button and everything turns off.
Ive never had any peoblems with clown loaches and large wc. I change 80% twice a week in all my tanks. And always keeping my filters on except the tanks i have sumps on. But then again we hardly have any chlorine or chloramine in our tapwater here in sweden. Some times a year i can read nitrate above 5ppm in the tap but nothing more then that. In the summertime the waterplants can use some chlorine but not much at all.