You made a great choice. A saltwater hot tub offers a more natural, comfortable soak. And, and with the right care, it’s easier to maintain than you might think.
Whether your hot tub is on its way or you’re getting ready for your first dip, a few smart habits can help you get the best performance from your salt system.
These seven tips for saltwater hot tub owners will help you keep your water clean and balanced.
1. Use the right kind of salt
Skip the grocery-store aisle. Table salt and many bulk salts contain additives that can interfere with the electrolysis process or affect water balance.
Instead, choose a high-purity salt made specifically for hot tubs. It dissolves cleanly, won’t leave residue, and keeps your system running efficiently.
For the best results, use Master Clear Salt Plus, available at Master Spas retailers and included in the saltwater starter kit. It’s formulated for use with the Master Clear system so you can start with water that’s balanced and easy to maintain.
2. Add the right amount of salt
Every saltwater hot tub needs salt to generate sanitizer, but more isn’t always better. Begin with the minimum recommended amount, then test and add more only if needed.
Over-salting can throw off your system’s balance and make the water feel harsh. Following your spa’s guide — or the Master Clear instructions — helps ensure optimal concentration without waste.
3. Start strong with a sequestering agent
At start-up, or after refilling your hot tub, add a metal and mineral sequestering agent. This helps bind and remove impurities from the water — like iron or calcium — that can interfere with the salt system’s ability to generate sanitizer.
Think of it as clearing the path so your salt system can do its job effectively from Day 1.
4. More isn’t always better
You might be tempted to turn your salt system up to the highest setting, thinking it will keep your water extra clean. However, that’s not always the best approach.
Most salt systems allow you to adjust the sanitizer output, giving you control over how much chlorine the system generates. Depending on your model, you can select from different levels or percentage settings. Even with an automated system like Master Clear, you can manually fine-tune the output to match how often you use your hot tub.
Start with a lower setting and adjust gradually. If you don’t use your spa frequently or usually soak solo, a lower level is typically enough. Higher settings are best reserved for when you’re using your hot tub more often or entertaining guests.
Finding the right balance will extend the life of your salt cell and help maintain softer, more comfortable water.
5. Keep an eye on pH
Even with a salt system, balanced water chemistry is key. Your pH level affects how well the system can generate sanitizer.
If the pH is too high or too low, the readings can be off and your salt cell may have to work harder to maintain sanitation. Check your pH weekly and adjust as needed to stay within the recommended range — typically between 7.2 and 7.8.
Some salt systems, though, operate at a lower pH. For example, the recommended pH for Master Clear Salt System is 7.0 to 7.2.
6. Use spa-specific products
It can be tempting to mix and match products, especially if you’ve had another brand of spa or a saltwater pool. But it’s important to use products designed for hot tubs.
Spa-specific test strips, balancing products, and maintenance supplies are formulated for the higher water temperatures and smaller volumes of a hot tub. They’ll help you avoid issues like foaming, staining, or cloudy water.
Make it part of your weekly routine to check sanitizer and pH levels — and inspect your salt cell monthly for buildup.
7. Watch water hardness levels
Keeping an eye on calcium hardness is just as important as monitoring pH. If the hardness is too high, minerals can build up on the salt cell, reducing its ability to produce sanitizer efficiently.
If you notice calcium buildup on your spa shell or salt cell, refer to your owner’s manual for specific instructions on cleaning or rinsing the cell. A simple rinse can help prevent buildup and keep your system performing at its best.
Enjoy the benefits of your saltwater spa
A little attention goes a long way. By keeping pH in range, using the right products, and letting your system work efficiently, you’ll enjoy clear, comfortable water every time you step in.
Master Clear by Master Spas makes water care simpler by producing sanitizer only as needed — so you can spend less time maintaining your spa and more time enjoying it.
If you’re still exploring your options, visit your local Master Spas retailer to learn more about hot tubs with the Master Clear Salt System.