Spa Balancers

Spa Balancers Explained

Check Total Alkalinity First

Depending on the test reading, add sodium bicarbonate (spa up) or sodium bisulfate (spa down) as needed. Use your test strips- a well balanced spa should be between 80-120 PPM in total alkalinity. If the total alkalinity goes above 120, you should add sodium bisulfate (spa down). If the test strip reads below 80, add sodium bicarbonate (spa up). Add these fast-dissolving spa products to your spa, and then recheck your alkalinity in a couple of hours. It is important to maintain your alkalinity first because it affects your pH.

Check for Calcium Hardness

The best way to keep the calcium hardness in your spa in check is to use soft water in your spa. If your spa has too much calcium hardness, it will cause scales to form in your spa. You can use a spa defender product to protect against these scales. On the other hand, if your spa does not have enough calcium hardness, the water will start to draw minerals from other sources, like the aluminium or iron in your equipment. In this case, use a calcium booster to balance the calcium hardness in your spa. [4]

  • Calcium hardness should stay between 100-250 PPM if the spa has an acrylic finish and 250-450 if the spa has a plaster finish.

Check the pH Levels Last

Add sodium bicarbonate (spa up) or sodium bisulfate (spa down) as necessary. Your pH should stay between 7.2-7.8. If the pH is off, first work to stabilize the total alkalinity. Then make sure you have added the proper amounts of chlorine/bromine to your spa. And then if the pH is still off, add spa up/spa down or a pH balance product to your spa pH level.

  • Your pH levels may be adjusted if: the sanitizer you use is not working well, your spa has cloudy water, scales have developed on your filter, or the water is causing skin and eye irritations.