My pool is oval 18x34 14400 gals .

Finding borax is not easy. So far no one carries it. I could order over the web from amazon. How much do you think would be used over a 3 month summer. trying to figure out how much to buy.

I think using borax instead of washing soda might be better, so I'm not adjusting the TA and PH at the same time. What do you think?