Hi. I live in south Florida and have a 55 gallon freshwater (tetra's, pearl gourami, 2 red tail sharks, farawella) and have been using filter fresh water from my local tropical fish store. The local water gets extra chlorine dumps every so often and the city isn't always great at posting this info. My question is that I'd like to make my own filtration system so I don't have to constantly run to the store. However, I'm not sure what I need. I don't want to just dump a chlorine removing solution into the tap water either. Any suggestions would be greatly appreciated!