Digital Hot Tub Water Testers Reviewed

Owning a hot tub is a great way to enhance your relaxation, but it comes with its fair share of responsibilities. Routinely testing your water is one of these essential duties, yet many hot tub owners still find it overly confusing, despite it being crucial in maintaining sanitary and comfortable water.

Why? Traditionally, water testing has required a considerable amount of equipment and is both demanding and confusing in nature. Test strips and liquid reagent kits have commonly been the go-to methods for checking water quality, but both uphold this reputation.

Recently, however, digital hot tub water testers have begun to revolutionize the way spa owners monitor their water chemistry. These advanced devices offer precise readings with minimal effort, eliminating guesswork while reducing the chances of inaccurate results. Many devices can also connect to users’ smartphones, allowing hot tub owners to monitor their spas from afar and even automate chemical dispersion.

Keep reading to learn everything you need to know about digital hot tub water testers, and then take a closer look at Sundance’s digital water testing solution.

Why use a digital hot tub water tester?

  • Digital water testing offers a plethora of advantages over traditional testing methods:
  • Simplicity: No need to compare colors or interpret vague results. Digital testing gives you clear, accurate readings with intuitive recommendations.
  • Highly Efficient: Digital testing gives you results within seconds, without mixing reagents or waiting for color changes. That means less time reading confusing instructions and more time soaking it up in the tub.
  • Accuracy: We’re human, we make mistakes. Digital testing provides exact results, reducing human error and giving you extra peace of mind.
  • Data Storage and Connectivity: Many digital testers can connect directly to your smartphone, allowing you to monitor your hot tub from wherever you like. Some also store historical data, allowing you to review previous statistics and examine trends.
  • Durability: Unlike test strips or outdated testing equipment, digital testers are designed to last for months, saving you time and effort in the long run.

How to Choose the Right Digital Water Tester

Similarly to hot tubs, there are a few digital hot tub water testers on the market, which can oftentimes make it difficult to make a decision. Here are a few factors to consider that will help narrow down your search:

Testing Capabilities

Different testers measure different aspects of water quality. Look for a tester that can test:

  • pH (Ideal range: 7.2-7.8)
  • Alkalinity (Ideal range: 80–120 ppm)
  • Chlorine/Bromine (Chlorine: 1–3 ppm, Bromine: 3–5 ppm)
  • Calcium Hardness (Ideal range: 150–250 ppm)
  • Cyanuric Acid (Ideal range: 30–50 ppm)

Reliability and Accuracy

For your digital water tester to be worth the investment, it needs to give you results you can trust. As is the case with many digital devices, higher-end models typically tend to yield more accurate results than cheaper alternatives. Consider investing in a high-quality device to avoid misleading readings that could lead to improper water treatment.

Ease of Use

If you’ve tested your water before, you know that you’re not in the market for something complicated. Look for a digital tester with a simple interface, an easy-to-read display, and intuitive features. Oftentimes, features with smartphone connectivity help further simplify the testing process. Keep in mind that some digital water testers require reagents, while others use sensors or test probes.

Smart Features and Connectivity

Incorporating your phone into your spa maintenance process offers a whole new level of transparency and control. Many digital testers can connect to apps, store historical data, or even provide maintenance recommendations. If you’re looking for a high-tech solution, search for a smart water tester with an app integration.

Budget and Lifespan

As is the case with many serious purchases, digital water testers come at a wide range of prices. However, in this instance, a higher initial investment can pay off in the long run, as more expensive models typically offer increased durability and accuracy. Cheaper models can also require more frequent sensor or reagent replacements. Consider the lifespan of your hot tub and your budget, and search for digital water testers that offer an ideal balance of durability, affordability, and features.

Common Issues Digital Testers Can Address

Even with regular testing, hot tub owners can still encounter water balance issues. However, digital testers provide more precise data, making it easier to diagnose and fix problems. Here are some typical hot tub water problems that digital testers can help solve:

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1.   Cloudy Water

Possible Causes: High TDS (total dissolved solids), unbalanced pH, insufficient sanitizer levels

Solution: A digital tester can quickly identify low sanitizer levels or excessive TDS, allowing for immediate treatment. Some testing platforms can provide suggestions and even automate chemical dispersion. 

2.   Foamy Water

Possible Causes: Residual soap, lotions, or high TDS in the water.

Solution: Digital testers can measure TDS levels, indicating when it’s time to drain and refill your spa.

3.   Green or Algae-Filled Water

Possible Causes: Low sanitizer levels, high phosphates

Solution: A digital tester will instantly confirm if chlorine or bromine levels are too low, allowing you to take quick corrective action.

4.   Skin or Eye Irritation from Water

Possible Causes: High or low pH levels, excessive chlorine

Solution: Digital hot tub water testers will provide instant pH and sanitizer readings to ensure your water is comfortable, safe, and hygienic.

A Closer Look at Sundance Spa Sense™

Countless years of innovation and experimentation have led us to the development of Sundance Spa Sense™, an ideal solution for ensuring optimal water conditions in your hot tub.

Simple to use with easy-to-interpret results, this digitalized platform is fully integrated with the SmartTub app, simplifying testing and streamlining chemical dosing with automation.

Let’s take a closer look:

Key Traits

  • Highly Accurate Measurements: MICROFLUIDIX chip sensing, the only liquid-based reagent sensor on the market, provides the most accurate water testing available.
  • Intuitive: No need for confusing, outdated, color-coded test strips. Spa Sense™ recognizes your exact spa model and provides precise recommendations of what and how much product to add.
  • Unmatched Efficiency: Get results in seconds, not minutes, directly on your smartphone. Spa Sense™ works to measure your spa’s chlorine, pH, and alkalinity daily, reporting it back to you through the SmartTub® system.
  • Smart Monitoring: Advanced connectivity and up-to-date monitoring allow you to keep an eye on your hot tub from anywhere you have service.
  • Long-Lasting Durability: Advanced engineering has significantly extended the lifespan of the Sutro water testing system used within the Spa Sense™ platform. That means you can get rid of those frustrating test strips for good.

How Does Spa Sense™ Work?

The Spa Sense platform is backed by the technology of the patented SUTRO Water Monitoring System, the world’s leading water testing device. The system consists of a Smart Monitor, used for testing, and a Smart Hub, used for transmitting data.

The Smart Monitor

Roughly the size of your forearm, this cutting-edge device is essentially a water-testing robot that is attached to your spa’s drain line. Inside the device, you’ll find a rechargeable battery and a test cartridge filled with a variety of reagents (substances used for chemical analysis).

The Smart Hub

The Smart Monitor transmits your pH, free chlorine, and alkalinity to the Smart Hub via a sub-GHz link. Then, it connects to Spa Sense servers, which calculate what adjustments need to be made to your water. Lastly, this information is transmitted to your phone (via Smart Tub) to tell you exactly what you need to do, all within a matter of seconds.

To learn more about the specifics of the Spa Sense™ system and its installation, download a manual

Digital hot tub water testers are transforming the way spa owners maintain their water quality, offering unparalleled accuracy, efficiency, and convenience. By eliminating the guesswork associated with traditional testing methods, these devices can help ensure that your hot tub remains a clean, safe, and enjoyable space with minimal upkeep and effort. Among the leading innovators in this space, Sundance Spa Sense™ stands out as a smart, reliable, and user-friendly solution that seamlessly integrates with modern technology. Whether you're looking for precise water monitoring, automated maintenance, or seamless control from your smartphone, investing in a digital water tester is a game-changer that is sure to enhance your overall relaxation and reduce the stress of hot tub ownership.

To learn more about digital water testers and the Sundance Spas brand, visit us online.