So here's my thought..I could install the the R/O system in my extra bathroom where I have been previously doing water changes. Fill my 40 gallon plastic tub (I've been filling it in the bathtub with my freshwater tank previously) use a float valve to shut the thing off the night before a water change. Prepare the water in the tub and then pump it to the tank the same way I was doing before. The only problem I have had with this so far is I hate dragging a garden hose across my living room!