We now have our 16 x 48 Intex Ultra Frame pool set up and filled. So two nights ago we started to tackle the water balancing. The PH was high so we added PH minus. That brought the PH down to 7.4. So then we shocked it let it sit overnight. In the morning the chlorine was 8-10. By the time we got home from work the chlorine registered 0 and the PH was up to 8.2 again. So another round of PH minus, let it circulate for 30 minutes. PH back down to 7.4. Added Bleach and let it circulate for an hour so the kids could swim. Last night around 10:00 I shocked it. This morning the chlorine was off the chart. I figured it might be since we did the bleach and then the shock. But stopped by home on lunch and chlorine is already down to 0 and PH is high again. TA is also high. Am I missing something? Why do the levels keep dropping during the day? Any suggestions?