[Jacob]

More idle thoughts- keeping the aquarium with no water changes, just filtering out waste, if this were possible, wouldn’t there be a build up of humic substances that don’t get filtered out? The conditions in the wild are supposed to be really saturated with humic substances- how do the fish react to different levels of them, how much would it take to hurt them, how much do they have to have present, and how do they physically react to them at all?
I thought maybe with zeolite and uv filtering you could just top off the tank. Water changes are probably the best method that everyone uses though, it seems.
In the wild the changing levels of humic substances are seasonal, I assume. Maybe it is daily rainfall and there are certain kinds of fluctuation that they put up with well.