Hi, The weekend was no problem. Ran the pool cleaner the whole time and had to backwash often. We had a downpour on Sunday that added about 3" to the pool and brought the FC down to about 5.5. I've needed about a gallon of 12.5% each day to keep the chlorine level at 14 or higher. Testing tonight when I got home from work I found my FC/CC was at 6.5/.5. My PH is 7.2. Alkalinity is 110 and hardness 150.