PH High after shocking

[Deacon22]

I opened the pool this week to the most algae I have ever had. After getting it almost perfect I had perfect ph this morning. This afternoon I vacuumed pool to waste and then added shock. I was told to double the shock. I added four bags of shock and the ph went through the roof. Is this normal? Should I add PH down immediately or wait until morning and re test?

Thanks

[Teapot]

Yes perfectly normal, as the high chlorine shock level lowers so will the pH and it will return to almost where you were before shocking.
Please post your water test results and we can guide you through this process. Shocking is a process and not a product. You raise the free chlorine level and hold the level with additional chlorine until the water is clean and clear.