Ok. So I've been SLAM-Ing for 3 straight days. 1st day I checked FC every 2 hrs but figured that was inaccurate since it takes 4hrs for my pool to do a complete turnover. Started testing every 4 and have been maintaining 19ppm, adding liquid chlorine at about 11oz or so each 4 hrs to keep at ~19/20. Brushing walls and floor everyday. Running vacuum every other. Water is still this color. What am I doing wrong? I'm about to drain it and call it closed for the year! 
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yes and other than clarity- I've met them all. What next? Clearly I still have algae- I see if puff when I sweep floor. Why isn't it dying with the shock?Agreed, if FC went up that would invalidate the test. Even when it is cloudy there are still UV rays present. Same as you can still sunburn when it is cloudy. That is also why there are three criteria to end the SLAM process, SLAM Process