I thought I had my pool stabilized and then I started working on my pump times. I have a single action pump. I started with 4 hours and it seemed okay, then went down to 3 1/2 hours and it was okay, then went to 3 hours and started having algae issues/cloudy water. After I had decreased the pump time to 3 hours, I used the solar heater and thought there may have been something lurking in there that caused the issue. So once again I tried 3 1/2 hours for a week and it was okay, then went down to 3 hours and got algae again. So once again I slammed the pool and went back to 3 1/2 hours. I had been using the FC range for CYA of 50. There were no issues for some time, but there were 2 different days (not in a row) recently that I forgot to test the pool. The following days the chlorine was about the low end of my range (CYA = 50), so FC = 4, and one day it was around 4, then the other day after I missed testing it was too low (FC = 2). Both days I added chlorine for my target of 6. Would that one day of it going low cause algae? Or is the pump run time the issue (perhaps I should bump it up to 4 hours again)? If not, what do you suggest? I was reading about borates and wonder if maybe that will solve this issue. Any advice is welcome. Thanks so much!