Ok, water is nice and blue, just hazy. Yesterday I could make out a toy at the bottom in the deep-end, it was brownish. After I vacuumed the pool is all blue now though murky and I could only see bottom of shallow end. SWG has been set at 20% for last week (close to where I normally keep it though don't know exact number as I neglected to write it down last year). FC has dropped from 26 to 20 over the last 8 days. I think I'm done, water has fine particles in it making it not clear but it doesn't filter out very quickly. I think the algae has been dead for quite some time, just taking a long long long time for the water to become clear due to the fine particles remaining. They eventually settle on bottom, vacuuming mixes them back up into water but captures some of it.