Can you use borax in a hot tub to control ph? Baking soda is mostly used to raise the alkalinity of your hot tub’s water.
Its role is that of a buffer, protecting the ph from fluctuating all over the place.
How much borax to raise ph in hot tub. While baking soda can be used to raise the ph of your hot tub’s water, it will only raise the ph slightly. If you are confused about how much borax to add to your swimming pool, first conduct a ph test, there would be a need for you to raise your pool’s ph level if you discover it is lower than the normal range of 7.2 to 7.6. But when it comes to raising ph in a hot tub, you can’t raise one without raising the other simultaneously.
This means that at no cost to you, we may earn a small commission for qualifying purchases. Remember, the proper level for ph should be between 7.2 and 7.8 parts per million. Where ta is concerned, you need to keep it between 80 and 120 ppm.
However, at a ph of 7.5 and a ta of 100 the answer is about 8 ounces (weight) so 1/2 pound of borax (sodium tetraborate decahydrate) to raise 10,000 gallons of water by 0.1 ph. If, however, your ph is fine but you’re looking to add more alkalinity to buffer your ph, you may need to add borax with an acid to balance the ph.