In March, I moved my N. ampullaria to a bigger pot and used substrate I mixed up. It turns out I didn't buy the proper ingredients, so I ended up using large orchid bark chunks, sphagnum moss, perlite, and tropical potting mix. He doesn't seem to dislike the substrate. I am concerned about the fact that it smells "swampy". The upper half of the mix drains well, but I guess I didn't mix it evenly, so the bottom retains moisture. Is it bad for my pitcher?