I have been preparing my pool for closing over the past 10 days. I have monitored chlorine and pH every day. I am filtering 12 hours a day, as normal. My pool temp has gone from 85 degrees down to 53 degrees today. Several nights with temps in the high 20's to low 30's have helped.
Today, I did a complete set of tests, in preparing to close. To my surprise, my pH was at 8.2, well above the normal 7.4-7.6. My TA was now 140, up from the normal 110-120 (manually dosed pool.) My CYA had also risen from 40 to 50. CC's were normal at zero. CH was normal at 150 (vinyl pool.)
We have not had rain for ten days, and I have not added any chems except chlorine. Also, I have not added any fill water. Any idea what's going on?
Thanks,
G.
Today, I did a complete set of tests, in preparing to close. To my surprise, my pH was at 8.2, well above the normal 7.4-7.6. My TA was now 140, up from the normal 110-120 (manually dosed pool.) My CYA had also risen from 40 to 50. CC's were normal at zero. CH was normal at 150 (vinyl pool.)
We have not had rain for ten days, and I have not added any chems except chlorine. Also, I have not added any fill water. Any idea what's going on?
Thanks,
G.