Quote Originally Posted by jmarcum View Post
Seems like it's actually borax I need not baking soda. Is that right? I don't know how to calculate this because I don't know what my ph actually is (since it was completely off the charts low)
Yes, you use borax to raise pH.

Here's a tool you can use to calculate doses

http://www.troublefreepool.com/calc.html

You may have to initially estimate your pH and go from there. Try raising pH a little at a time instead of trying to do it in one shot.