At 8 AM my FC was 8. There was absolutely no sun whatsoever on the pool that early so I can rule it out. I don't have any algae or dead things in my pool to consume that much chlorine. After I did my FC test I added the 5 drops of R-003 and it was a very pale color, more like cloudy. It didn't turn any shade of red. I added 1 drop of R-0871 and it cleared up, so I guess I do have .5 CC? I'm going to add 2 jugs of bleach now, which should bring me up to 13 on FC, and retest when I get home later tonight.