Our new pool was built over the winter and this is my first pool. As I posted in my intro, I've relied heavily on the info on these boards to get my chems started in the right direction. Things are going great for the most part; however the only minor issue I'm experiencing is my PH and TA are tending to creep up. I suspect this may be something I'm just going to have to live with due the combination of pool features and the nature of the fill water where I live. Our pool includes an 8 foot round spa that has a large spill into the pool. Combined with the SWG, and occasional use of the sprays on our raised wall the result is a lot of aeration. Fill water is off my scale at 8+, TA starts at about 120 PPM. Being an aquarist, I suspect like in an aquarium, our pool water is naturally going to want to return to its baseline, and I will continuously need to add acid to control the rise. I just wanted to be sure I'm not missing something due to inexperience. I've kept a journal of test results since fill; Chems as follows:
Start-up (March 29): PH 8+; TA 120 PPM; CA 120
Current: FCL 6.5; CC 0 to .2; PH 7.8; TA 80; CA 340; CYA 70; Temp about 93'; pump run time 1200 through 2000; SWG set to 65%
About every other day or two I add about 10 Oz to 20 Oz MA to control the PH, which tends to rise to 8+ rather quickly. I've tried to patiently lower TA by dropping PH and aerating. Lowest its gotten was 75.
Any input is appreciated.