Ok. We do have dirt and leaves that fall in to pool everyday. Even mild winds will get the leaves in pool which I try to skim right away. Also, we have weekly Gardening service and he happens to blow a lot of debri and dirt in to pool. No matter how careful he is around the pool area things get in there. Plus lots of bugs as well. So with that being said 8FC should be okay on my situation? As you can see from the pic I attached the pool is surrounded with bushes, dirt, rocks and palm trees.+1 on a higher than “target” target. I was maintaining FC of 5ppm and had an algae outbreak that took quite awhile to get under control. After guidance from this forum, I now manage FC in a range of 7-9ppm. We had heavy rains last week and quite a bit of organic debris was dropped into the pool. Even after cleaning up the pool, my FC dropped from 8 to 6 to 5 over 3 days, so I knew I had a problem. Sure enough, I was dropping 3ppm based on the overnight chlorine loss test. I was able to get through the SLAM in 2 days with an OCLT of .5 after day 2. Water is back to crystal clear! Had I still been maintaining FC of 5ppm, I suspect the situation would have been worse and the SLAM would have taken much longer.