Pool Water Testing Explained: What Pros Actually Use

Bad pool chemistry decisions usually start with one thing: a bad test. We walk through the real pros and cons of the tools most people rely on to test pool water, and why your “best” method changes based on whether you’re running 80 stops a week, bidding a new account, starting up fresh plaster, or managing commercial compliance.We compare test strips, Taylor-style reagent test kits (including the popular K-2005 and K-2006), photometers like the Pool Lab 2.0 and ColorQ 2X Pro, and high-speed options like the LaMotte Spin Touch. You’ll hear where each method shines, where it can mislead you, and how factors like reagent shelf life, tablet handling, and simple user error can swing your readings. We also dig into why photometers are so powerful for accurate pH and chlorine numbers, plus how digital logging can support commercial pool records and customer trust.To wrap it up, we share a practical “mix and match” approach for pool service businesses: use the affordable tools daily, verify weird results quickly, and pull out the precision gear when you’re balancing LSI or solving a stubborn problem. We also make the case for one digital tool that earns a permanent spot on your truck: a reliable TDS and salinity meter, while explaining why portable digital pH probes often create more hassle than value. If this helps, subscribe, share it with another pool pro, and leave a quick review with your go-to testing method.We break down the four main ways to test pool water and explain why “best” depends on your route, your budget, and how precise you really need to be. We compare speed, cost, accuracy, and real-world use cases so you can stop guessing and start testing with purpose.  • four common methods: test strips, reagent kits, photometers, digital testers  • why Taylor reagent test kits stay the most affordable option for weekly service  • the biggest drawback of reagent kits: color matching and human interpretation  • how photometers work and why they deliver more precise digital readings  • when logging and documentation matter for commercial pools and startups  • why LaMotte Spin Touch is fast but expensive to run  • when test strips are accurate enough and when they are not  • using strips to verify odd readings and quickly confirm low chlorine  • which test factors you do not need to measure every week  • how user technique affects photometer accuracy with tablets and drops  • why a TDS and salinity meter is the most useful digital tool  • why portable digital pH probes often create more work than value  Learn more at swimmingpoollearning.com.  Looking for other podcasts, you can find those by going to my website, swingingpolearning.com.  If you're interested in the coaching program that I offer, you can learn more at poolguidecoaching.com.  Send us Fan MailSupport the Pool Guy Podcast Show Sponsors! HASA https://bit.ly/HASAThe Bottom Feeder. Save $100 with Code: DVB100https://store.thebottomfeeder.com/Try Skimmer FREE for 30 days:https://getskimmer.com/poolguy Get UPA Liability Insurance $64 a month! https://forms.gle/F9YoTWNQ8WnvT4QBAPool Guy Coaching: https://bit.ly/40wFE6ySupport the showThanks for listening, and I hope you find the Podcast helpful! For other free resources to further help you:Visit my Website: https://www.swimmingpoollearning.comWatch on YouTube: https://www.youtube.com/@SPLPodcast Site: https://the-pool-guy-podcast-show.onpodium.com/UPA General Liability Insurance Application: https://forms.gle/F9YoTWNQ8WnvT4QBAPool Guy Coaching GroupJoin an exclusive network of Pool Service Technicians to access the industry’s leading commercial general liability insurance program. Protect your business.Premium is $64 per month per member (additional $40 for employees and ICs)$59 per month for Pool Guy coaching Members - join here! https://www.patreon.com/poolguycoachingLimits are $1,000,000 in occurrence and $2,000,000 in the aggregate - Per member limits     [ $1,000,000 per occurrence and $4,000,000 aggregate available for $75 per month ]$50,000 in HazMat Coverage - clean up on-site or over-the-roadAcid Wash Coverage - Full Limits