I have purchased and set up a starter pool to see if we are interested in investing in a large, permanet pool for our family. I filled it from our well in an attempt to save money (it is free). Before treating it in any way it had a greenish, cloudy appearance. After shocking it it turned very brown. We have been cleaning the filter every few hours for several days. It is not as brown as before, but is still brownish and murky. No odor. Chlorine, pH, Alk and Br levels are acceptable... its just the color. Is there any help for this???