Don't know if I need to SLAM my pool or just need to raise the CYA level. I have a 24,000 gallon salt pool and have a current CYA of 45. I shocked my pool 3 days ago with 3lbs of granular and 2 days ago with 4lbs. I ran my SWG at super boost for 48 hrs, but my FC level is at 0. Even when I opened my pool it was pretty clear, not green. I power vacc'd everything out, water is crystal clear, but not getting an FC reading. My CC is at .4. My pool is exposed to direct sunlight all day, so Im thinking the sun is burning out the FC. I'm curious if I could have Algae in my pool even though it's clear. Hoping I don't need to SLAM it, but just shock it and add stabilizer.