Hi, I have been maintaining my pool for years but finally decided to join TFP because of frustration with algae. My pool water has been clear most of the summer but recently algae has started to grow rapidly even though my levels seem to be stable. I shocked it last week with 5 lb Ca hypochlorite. It seemed to help for a few days but then algae started growing again even with FC 10, TC 10, CH 250, Ph 7.2, TA 120, CYA 100. Had the auto vacuum on for the last 24 hrs to pick up algae and now pool is quite cloudy. Test kit I'm using is AquaChek test strips. What am I doing wrong?
30K gal IG vinyl, Hayward S-240 sand, 1HP Whisperflo