Got my new readings...chlorine low again...damn my lack of stabilizer!

FC: 1.8
CC: 0.2

pH: 8.0 (I really don't understand how this is possible. I was at 7.0 yesterday. I added 1 gallon of liquid stabilizer, 1 gallon of liquid chlorine, and one 76oz box of Borax. According to the pool calculators, I needed 169oz of Borax to raise my level to 7.4. I used less than half of that because that's all I had on hand, and it raised it to 8.0. Very strange. So one drop of the R005 turned it to the desired color of pH, so I will need 22oz of Muriatic acid to get back down to a 7.5 pH reading. (I think)

TA: 50 (the Taylor kit says it'll turn from green to red, but it's more of a pink, right?)

CYA: I didn't even notice that the lowest level on the tube is 30, and I already knew I would only have around 15 so I guess I just wasted my drops. Oh well, won't be doing that again. I have some HTH stabilizer that I'll be putting in over the next couple of days to raise up my CYA.

I guess I'm just concerned with the pH. Did I do something wrong?

Edit: I just checked and I have no idea where I got 169oz from? I guess I should double check my numbers before adding chemicals. Regardless, to get from 7.0 to 7.5 it says I needed 95oz of Borax and I only put 76oz, so I still don't understand how I got from 7.0 to 8.0.