I am finally getting around to working with the pool water balance. I know I need to keep the TC 7 - 10. Momentary lapse, I'll do better. Historically I had used Trichlor Tabs, until if discovered the BBB method. Both TA and CYA are elevated, so does it matter which I do first? Does lowering the water level and refilling to lower the CYA have any impact on the TA?