10 Best Digital Pool Water Testers 2025 in the United States

The Hofun Pool Salt Tester & PH Meter is a versatile and highly useful tool for various water quality measurements. One of its key strengths is its high accuracy, thanks to the titanium alloy probe which ensures quick and precise measurements. It offers a comprehensive range of parameters including salinity, TDS, EC, pH, and temperature, making it highly versatile for different applications such as swimming pools, aquariums, and hot tubs.

The three display designs for salinity tests (PPM, PPT, %) simplify reading the results, reducing the risk of calculation errors. This is particularly beneficial for users who may not be technically inclined. The ease of use is another significant advantage, with a simple operation mode that requires just turning on the meter and selecting the desired function. This user-friendly design makes it accessible even for those new to digital water testers.

In summary, the Hofun Digital Salinity Meter and PH Tester is a well-rounded digital pool water tester that excels in accuracy, versatility, and user-friendly operation. It is suitable for anyone looking to maintain water quality in swimming pools, aquariums, hot tubs, and other similar environments.

The Crystal Smart Water Monitor is designed for pool, hot tub, and swim spa owners who want an easy and reliable way to keep water chemistry balanced. It measures chlorine and bromine levels continuously—about 1,000 times a week—providing much more accurate and timely readings than traditional test strips or devices that measure just once a day. The monitor pairs with a smartphone app that sends notifications when your water needs adjustment and even suggests precise chemical doses based on your preferred brands, making it very user-friendly especially for those not confident in guessing chemical amounts.

This device stands out for its continuous testing and customizable recommendations, supporting multiple chemical brands without requiring costly replacement cartridges, which can save money over time. It also offers calibration and replacement parts with an initial year of free service and US-based support, adding peace of mind.

This monitor is an excellent choice for anyone seeking a hands-off, accurate, and convenient testing system for chlorine or bromine water, particularly in pools or hot tubs. However, be prepared for an ongoing $99 annual fee after the first year to maintain notifications, dosing advice, and support.