I want to add some AC to my system. I understand that, ideally, it should be
the last thing the water passes through on its return to the pond, but when
you have waterfalls, that's kinda hard. My thought is to place some in the
leaf basket of my pump: the water if reasonably "strained" prior to getting
that far, and I can rinse it clean weekly (like I do now!)

Will that work? Suggestions?

Lee