Crystal Smart Water Monitor for Chlorine & Bromine Pools Hot Tubs & Swim Spas - 24/7 Continuous Digital Water Testing with App Notifications & Customized Chemical Dosing (New Model)

Crystal Water Monitor is the best way to constantly consistently and reliably test and monitor your pool and hot tub water chemistry. Monitoring your water chemistry and temperature 24/7 more than 1 000 times per week to help keep your water crystal clear safe and ready for swimming.