Hello, I will be starting my build(18x36 inground vinyl 17,300 gal) next month. I have tested(TF-100) my fill water and here are the results. FC-1ppm, CC-1ppm, T/A-90, CYA-0 and PH is high over 8.2. My question is what to add and how much at what times when filling. I have already purchased the 8 gal liquidator and will be using the BBB method. Thanks, Dan