How Much Baking Soda To Add To Your Hot Tub

How to Use Baking Soda for Hot Tubs Hunker Baking soda, Hot tub, Tub


Having a hot tub in your backyard is a great way to relax and relieve stress. However, it’s important to maintain your hot tub properly to ensure it stays clean and safe. One common question that hot tub owners ask is how much baking soda they should add to their hot tub.

Why Add Baking Soda to Your Hot Tub?

Baking soda is an essential ingredient for maintaining the pH balance in your hot tub. When the pH level in your hot tub is too low, the water becomes acidic, which can cause skin irritation and damage to the hot tub’s components. Adding baking soda helps to raise the pH level and keep the water balanced.

How Much Baking Soda Should You Add?

The amount of baking soda you should add to your hot tub depends on the size of your tub and the current pH level of the water. As a general rule, you should add 1 tablespoon of baking soda per 100 gallons of water. So, if your hot tub holds 500 gallons of water, you would add 5 tablespoons of baking soda.

Testing the pH Level

Before adding baking soda to your hot tub, it’s important to test the pH level of the water. You can purchase a pH testing kit from your local pool supply store. The ideal pH level for a hot tub is between 7.2 and 7.8. If the pH level is below 7.2, you should add baking soda to raise it.

How to Add Baking Soda

To add baking soda to your hot tub, you should first turn off the jets and remove any debris from the water. Then, sprinkle the baking soda directly into the water and use a clean cloth or sponge to mix it in. Wait for the baking soda to dissolve completely before turning the jets back on.

When to Add Baking Soda

You should add baking soda to your hot tub whenever the pH level is below 7.2. It’s a good idea to test the pH level of your hot tub at least once a week to ensure it stays balanced. If you notice that the pH level is consistently low, you may need to add baking soda more frequently.

Other Tips for Maintaining Your Hot Tub

In addition to adding baking soda, there are a few other things you can do to maintain your hot tub. First, make sure to clean the filter regularly to remove any debris. You should also shock the water periodically to kill any bacteria or algae. Finally, make sure to drain and refill the water every 3 to 4 months to prevent buildup of minerals and other contaminants.


In conclusion, adding baking soda to your hot tub is an essential part of maintaining the pH balance and keeping the water safe and clean. By following the guidelines outlined above, you can ensure that your hot tub provides a relaxing and enjoyable experience for years to come.