Ok, basic filter questions, post shock. For years I, mistakenly, was using flocculent to help in the clearing of the pool water. My pool sits on a direct, heavy tree line and i am forever clearing debris, pollen, etc. So this month i replaced the filter sand that was fouled by the floc, at the suggestion of TFPers, and am trying to reform my ways. However, on a green pool and after a complete shock, I am now on my fifth day of filtering and am making very little head way. I realize this is probably a basic question, but I'm not sure it should take a couple of weeks to filter out green and get to a clear pool. Thoughts?