Well, today was frustrating. Yesterday I took the filter housing apart and the filter was pretty dirty, but I didn't think it was algae. Maybe dead algae but nothing green. Sprayed off the filter and it looked pretty good. I also looked at the weir door. Got down in the skimmer with a mirror and everything behind the door was clean. So I buttoned everything up and hoped I'd be able to pass an OCLT. I did not. Maybe a summary of what I've done will help, but I'm thinking I'll just SLAM it again and see how it goes.
I started by SLAM'ing the water on Sunday and when I did my OCLT, my chlorine went from 35 to 24 overnight. Wasn't feeling it so on Monday I just turned on the SWG at 100% and the pool went from 22 to 18 over the course of the day. Not SLAM level, but some significant chlorine. Hoping maybe things were over, I did an OCLT and did not pass. Went from 18 to 15 overnight. Yesterday I just had the SWG on normal and the chlorine stayed at 18. I did my OCLT and did not pass, but at this point, I was hoping maybe the reagents were the problem. I ran out of the liquid after a couple drops in the morning and felt that I could not rely on the comparison of a test using different bottles of the liquid. So I left things alone except now I'm at Tuesday and I cleaned the filter and checked the weir door. Did my OCLT last night and it went from 12.5 to 11. Unfortunately, I also see just a very small amount of algae in the same spot. Much much smaller, but not gone.
Obviously, I should have kept SLAM'ing. At this point, I think I've done all I can besides one more SLAM. I'm going to go brush everything down one more time, brush the bottom with my brush in combination with the robot and then throw in the chlorine. I may be wrong, but I feel like I'm getting closer, just that my starting and stopping is prolonging the process.