Have been on this site religously. Information has been outstanding. Have been testing my above ground (10000 gal) 3 to 4 times a day to try and get rid of this perfectly green color pool water. All tests are good and within rec. limits. Have switched out filter, vacummed, brushed and nothing has changed. It has been four days since I started dealing with it and does not seem to change at all. Any more advice would be greatly appreciated. Would love to switch to the BBB method, but am trying to clear this green up. Thanks for your time.