Noticed a light layer of something in the pool yesterday. I suspect it is algae and not dirt although I am colored blind The cleaner actually leaves tracks for the first time this summer. Foxx pools said my water was perfect yesterday. Can you have algae with perfect water? I run the pump 16 hours a day (now 24) and have an autopilot at 3200 ppm. FC is at 5. I plan to shock later but not sure what to bring the FC level up to. Any other advice? Off to soccer right now but I will be back!