Does Your Hot Tub Have Hard Water Issues? 3 Steps to Battle Scaling

Does Your Hot Tub Have Hard Water Issues? 3 Steps to Battle Scaling


You sink into your hot tub, ready for a long, relaxing soak. As you’re sliding in, however, you notice the side of the spa feels like sandpaper. It’s called scaling, also known as calcium buildup. Fortunately, descaling a hot tub is simple, as long as you have the right products on hand. Follow these three steps to keep surface areas free of calcium buildup.

  1. Reduce Calcium Buildup

The calcium buildup you see on your spa is a result of hot tub water scaling, which occurs when heat is applied to water that’s rich in minerals like calcium. The levels of these minerals in water vary dramatically from one area of the United States to the next; cities that have “hard water”—like New York City—are more prone to scaling. Professionals recommend using products like Sundance® Spas Protect Plus, which prevents and eliminates scale and stain build-up that can cause cloudy water on spa surfaces. A high-quality water filter can also help reduce minerals in your spa.

  1. Test Alkalinity

Minerals aren’t the only culprits for scaling. If your water’s pH levels are off, that could also lead to calcium buildup. High alkalinity can cause scaling, so it’s important to regularly test your water and use products that will either increase or decrease the alkalinity. If your pH level is high, alkalinity will be high as well.

  1. Use Elbow Grease

Like anything else in your home, your spa needs a thorough cleaning from time to time. Since skipping cleaning can contribute to scaling, should drain, clean and refill every 3-6 months, depending on use. There are products specifically designed to break up scaling, but you’ll need to put a little elbow grease into it. The good news is, you don’t have to drain your hot tub to clean calcium buildup. If your hot tub is full, simply scrub the area until it breaks up, which you can skim off. Any leftover pieces will be caught by the filter.

Although scaling can be frustrating, a little extra work can keep your surfaces smooth and shiny. Understanding what causes scaling—and how to fight it—is the first step toward a new routine that will keep your hot tub clean year-round.

Now that you know how to beat scaling, learn more about spa filtration and water maintenance to keep your hot tub clean.