As I mentioned above, I used Proteam Microfloc in my pool. I know it should not be needed, however I am still desperate to have clear water. Anyway, after using I stopped pump for 24 hrs and then vacuumed to waste. Prior to vacuuming the water was not crystal clear as I would have expected. It was clear enough for me to see the brush head on the bottom through the fog. After vacuuming and restarted the pump, the water is still cloudy, but slightly less. The Microfloc must have done its job in the since that I can now see the large particles flowing in the water. Any guess how long it will take my sand filter to clear it up? I still don't think filter even filters.