For the pH, I don't know how much it's going to take, but you can add 2-3 cups at a time (I'm assuming it's going into the skimmer) and give it 3-4 hours to circulate, and then you can certainly add more. Some people say you can estimate how much it will take by taking a sample of your pool water (maybe 3 gallons in your case?) and adding borax to that until you get to your target ph--and based on how much it takes to do that, you can multiply it out to get an idea of what it will take in your pool.

I think you need to verify that TA is indeed zero before you start adding a lot of baking soda. Also, adding a lot at one time will contribute to your cloudiness problems, so go slowly with that like you do with the Borax. I'm thinking you're going to need somewhere around 10 pounds or so to get your alk up to 60 ppm, but please verify that starting zero first!!

As with all other things, go slow, add little amounts at a time, and sneak up on your target--don't over shoot it. Patience is the key!!

Janet