How To Adjust Alkalinity In Hot Tub. It’s important to monitor the total alkalinity levels as the ph increaser will raise the ta level. Baking soda (sodium bicarbonate) is an extremely common way to raise alkalinity in a hot tub.
Raise the ta in a hot tub with 1,000 gallon of water using 0.14 lbs. You can raise the tub’s ta using the following methods: For example, if your hot tub holds six hundred gallons of water, add six tablespoons.
Make sure to retest your pool water after three days.
For that add 30 gm, 1 capful of sun boom to the water. For example, add 4 tablespoons of baking soda to a hot tub that holds 400 gallons of water. Add 1 tablespoon of baking soda to the hot tub for every 100 gallons of water it holds. Muriatic acid is the other way you can reduce the alkalinity level in your hot tub.