Fish Tanks & Supplies

6-in-1 Residual Chlorine Monitor Backlit LCD Display Chlorine Temp Tester Glass Probe Smart Equipment for Home Swimming Pool 1. **6-in-1 Water Quality Tester**: This versatile water quality tester is designed to measure pH, ORP, residual chlorine, EC, TDS, and temperature, making it an essential tool for ensuring safe and clean water in your home, swimming pool,... 6-in-1 Residual Chlorine Monitor Backlit LCD Display Chlorine Temp Tester Glass Probe Smart Equipment for Home Swimming Pool