So a few weeks ago I went to my local swapmeet and I met up with one of my friends who actually sells his plants there (sometimes his carnivorous ones. ). And during one of our conversations he mentioned that he recently began growing water hyacinths in those plastic kiddie pools. When he changes the water out he gives it to his carnivorous plants! (He normally gives them rainwater that he collects.) So that day I went home utterly horrified on what would become of his plants. And now yesterday when I went back, I asked him how his plants were doing. Surprisingly enough (for me at least ), he said that they were doing fine! And some of them were actually speeding up their growth. Hearing about it from him I'm actually considering trying it myself. I'm guessing that the water hyacinths must have done something to the water to make it less fatal to carnivorous plants. Maybe drain it of its nutrients? What do you guys think?