Washing soda can be hard to find. If you have a pool or hot tub supply store close you can buy a product called pH Plus which is pure sodium carbonate AKA washing soda. It is used to adjust the pH of pool water.
Washing soda can be hard to find. If you have a pool or hot tub supply store close you can buy a product called pH Plus which is pure sodium carbonate AKA washing soda. It is used to adjust the pH of pool water.