so say you have something like, a treefrog for example, in the upper portion, and some sort of fish in the water, what do you do when the frog poops in the water? I mean it can't be that bad right? the frog would already be pooping in its own water and swimming in it, and since frogs are more sensitive to things like that than most fish I'd assume if the fish itself was a hardy species then it should be fine. Right?