I've been taking care of our pool for a couple years with no problems, but this is my first time closing. The biggest problem is I haven't gotten much sleep the past couple days because of a bad back, and my brain just isn't working right now.
I'm also under a time crunch- the winter cover is folded up and laying on the concrete next to the pool and it needs to get opened up and put on before it starts to mildew.
Pool is concrete in-ground 26'x22', 7 foot at deepest end, 3ish at other end. Approx. 22,000 gal
Water Temp: 61
Free Chlorine: 3
Total Chlorine: 3
Combined Chlorine: 0
Calcium Hardness: 160
Cyanuric Acid: 90
I would use Muratic acid to decrease pH, but that will also lower the Alkalinity even more. What should I add first?