High TA in fill water

[chem geek]

The saturation index with that high TA is almost +0.8 which is very high and at risk for scaling. Also, the high TA will make the pool have a tendency to rise in pH over time, requiring acid addition (unless Trichlor pucks are being used). You didn't list the CYA level so that could be high and another problem.

[AndyJ]

Duh, I didn't even think to look at the saturation index. It is a brand new AG pool which he just filled, so there was no CYA. He shocked initially with dichlor, so there is a bit now, maybe 6-10 ppm. The sample he gave me was not large enough to test for CYA after the other tests for TA and FC. I told him to buy a FAS-DPD kit so he can keep on top of his chemicals.

Thanks again for your attention to a newcomer like me. I have been reading this forum avidly for 4 years since I got my pool, so I feel like I know many of you already. I have learned so much from all of you already, but I know there is yet much to learn. It's a privilege to finally be able to register and post here. I hope to eventually be able to contribute as well.