I've never had to shock my pool but have started getting what appears to be a little yellow/brown algae on the shaded sides of my pool. It's not bad and brushes off easily. It doesn't come back for a few days. The water is still crystal clear. I'll admit that I haven't been brushing the pool as much as I am supposed to but in the past, that never mattered.
Borates are 50.
My CYA is about 60. I am going to increase this to 70 today.
My CC's are zero.
My FC has been on the low side because my SWG is having trouble keeping up as the water temp increases so I keep increasing the filter time to compensate. The water temp is about 85 degrees now. I'm currently filtering on low speed from 9 to 5 and the FC has started to trend low again. Right now it's at 2.5. I'm going to add bleach to bring it up to 5. And Ill do a OCLT tonight. I don't want to increase the filter time again. 8 hours should be sufficient, correct? Does it sound like I need to shock the pool for the first time? Should I do it today or wait for the results of the OCLT?