Pool builder was out this morning taking measurement to verify the amount of concrete needed to pour the decking tomorrow. He verified that the equipment will be set and electric work completed later this week and that the plaster crew will be here next week to plaster the pool.
So now I’m turning my focus to start up. I have already verified that my water is perfect for the bicar start up method. CH is 250, TA is 340, and pH is 7.2, giving me a CSI of +.23. CH + TA is greater than 500, so no additional carbonate will need to be added. As pH rises to 7.8, which I fully expect to happen, CSI will go up to +.83.
It is my understanding that as pH approaches 8.0, I will need to add muriatic acid to bring it back down to around 7.7 I have a case of liquid chlorine and a case of muriatic acid on hand ready to go and I’m ordering CYA today.
This late in the season, what CYA level should I target? Do I need to go all the way to 70, or would 50 suffice until next spring? At what point should the CYA be added? Also, is there anything else I should have on hand that I’m missing for the start up?
Edit to add: my iron and copper levels are very low. It’s been a few years since I had them tested, so I don’t remember the exact exact levels, but we don’t have any iron staining on any of the fixtures in the house. Should I consider adding a sequestering agent when I fill?
@kimkats @onBalance