In September 2020, we had a new liner installed in our inground pool and closed the pool after about 2 weeks. Last week had a new concrete deck poured.
I obviously had to get the cover off to do this, so I opened the pool as normal, just about 2 months early. I made some minimal changes to the water balance and over the course of about 10 days I got the CYA to 30 using dichlor. When we finally had a date set to pour, I double checked everything and brought the chlorine up to SLAM level with liquid bleach because we were going to have to have the pump off for about 5 days.
After two days I ventured out onto the pristine deck and did a full test. FC was 0 (not totally surprised), pH was off the charts high (ok, so they got some concrete in the pool...), but surprisingly, TA and CH were basically unchanged at 80 and 100 respectively.
The water had been stagnant for two days, so I ran my robot and brushed before testing again with similar results. I slowly added dry acid while brushing and running the robot in between doses until I saw 7.8. I didn't want to chlorine at 0, so I added enough bleach to get to SLAM level again. When I checked the next morning I had 0 FC and 0 CC. Ok, whatever, add bleach again, this time a little extra for good measure, test the next morning and 0. pH still keeps climbing as well. Now I'm starting to question my test kit, so I bring a sample to the pool store, and they concur with my results.
I still have a day before I get the pump running, but does anyone have any advice? Should I keep feeding it bleach? Is the concrete using up all the chlorine? Will the pH keep rising until all the concrete is out of the water?
Thank you
I obviously had to get the cover off to do this, so I opened the pool as normal, just about 2 months early. I made some minimal changes to the water balance and over the course of about 10 days I got the CYA to 30 using dichlor. When we finally had a date set to pour, I double checked everything and brought the chlorine up to SLAM level with liquid bleach because we were going to have to have the pump off for about 5 days.
After two days I ventured out onto the pristine deck and did a full test. FC was 0 (not totally surprised), pH was off the charts high (ok, so they got some concrete in the pool...), but surprisingly, TA and CH were basically unchanged at 80 and 100 respectively.
The water had been stagnant for two days, so I ran my robot and brushed before testing again with similar results. I slowly added dry acid while brushing and running the robot in between doses until I saw 7.8. I didn't want to chlorine at 0, so I added enough bleach to get to SLAM level again. When I checked the next morning I had 0 FC and 0 CC. Ok, whatever, add bleach again, this time a little extra for good measure, test the next morning and 0. pH still keeps climbing as well. Now I'm starting to question my test kit, so I bring a sample to the pool store, and they concur with my results.
I still have a day before I get the pump running, but does anyone have any advice? Should I keep feeding it bleach? Is the concrete using up all the chlorine? Will the pH keep rising until all the concrete is out of the water?
Thank you
