High TA in fill water

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.

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.