So I am a bit baffled whats going on with my pool. I keep finding traces of algae in the crevice areas that my robot pool vacuum has a hard time getting too. My specs are below and I am confused why algae is growing in the first place since FC has been perfect for my SWG pool. Water is crystal clear. CYA is also on the money. Thoughts? Do I really need to start the SLAM process? Don't really want to start raising chlorine levels with the holiday and expecting a lot of swimmers this weekend. I can never seem to get a straight answer what FC levels are safe to swim in.
FC - 4.5ppm
CC - less than .5
PH - 7.7
TA - 90 (little high but not alarming right?)
CYA - 70
p.s. testing with a Taylor K2006 kit