Alkalinity -- Whoa! off the chart!

[subedoo]

We just installed a used pool, filled it up, and messed with the filter for a couple of days. I think we are ready to clear up the water and use it.

Using the Walmart drop test kit my alkalinity is off the chart. Well over 200. CL is around 5 and PH is 7.2. Not sure about CYA but I dumped in 4 lbs which should give me a level of around 30-40.

I looked at the Bleach Calc to figure out where to begin with the baking soda but I'm unsure.

I have a 28 ft round AG with a depth of about 3.5 ft.


Edited to add I am using BBB, of course. : )