Hi. this is my first post ever on any blog or thread on whatever it may be called, so bear with me. I'm starting here because I can't seem to get any real answers to my questions. As the title leads on, I am trying to build, in a sense, a swimming pool that I would like to have fish in, within a greenhouse. The water could be used in the plants, the pool could be somewhat free of typical chemicals and could be used year round (I live in new england). Considering a BakkI shower filter with some uv sterilyzation and very low levels of chlorine if necessary (I would think the fish could handle the suggested .05 ppm recomendations). Does anyone think this would be unsafe, provided it is cleaned regularly and not overstocked?