I have algae in my pool for the third time this season. Each time I raise the chlorine level to SLAM level and maintain it until overnight chlorine loss is less than 1.
Each time, after passing the overnight chlorine loss test I let the chlorine drop to target level of 7 but when the chlorine drops to 8 or 9 the algae starts to grow again.
i am clearly doing something wrong. Any ideas?
I have been running the pump/filter for about 6 hrs a day (when NOT slamming, 24hrs/day during SLAMMING) could that cause algae?
FC 18 (goal. To bring it up to 22)