pool balance before closing?

[FNC1962]

New numbers, FC 4.5, cc 0, pH 7.1, TA 90,CH 160, CYA<30.
I have only used tablets so far. I am going to use Borax and Baking Soda. Would like to know how much I need to add. Is Cal-hypo a powder? How much do I need to add to bring to a safe level? How do I add it? Anything else? I will check on poly quat 60. Thanks

[Watermom]

You don't need baking soda. TA of 90 is fine. To bring your pH up, use some Borax. Start with about a fourth of the box added slowly to the skimmer while the pump is running, breaking up any clumps. Wait a few hours and redose until your pH is where you want it.