Alright. I know they say that there are no stupid questions. But this one is ultra-mega stupid. I ask that nobody comes to my house and beats me up for asking this, but here goes. Is it possible to fashion a swimming pool into kind of an indoor pond? You know, the kind that you can buy from, like, Wal-Mart or something? I figured that it would be a lot cheaper than buying/building an aquarium. Naturally, it would just be used for keeping fish, and there would still be filtration, substrate, and all that other crap. If that was possible, the only change from an aquarium would be the receptacle that the fish are kept in. So what do you guys think?