PH Meter, 4-in-1 Digital pH Meter with pH/TDS/EC/Temp Function with ATC for Drinking Water, ±0.01 High Accuracy pH Water Tester for Hydroponics, Aquarium, Pool, Pocket Size Water Quality Tester Chaoos or when untreated water is

or when untreated water is added

freshwater tank

Each vial treats 30-250 gal and should be dosed every 2 weeks

EC (electrical conductivity) of nutrient solutions in hydroponic systems

PH Meter, 4-in-1 Digital pH Meter with pH/TDS/EC/Temp Function with ATC for Drinking Water, ±0.01 High Accuracy pH Water Tester for Hydroponics, Aquarium, Pool, Pocket Size Water Quality Tester Chaoos or when untreated water isBrand: FunDADYUS Features: : With FunDADYUS 4 in 1 pH tester, you can accurately measure the PH, TDS, EC and Temp values. Comprehensive water quality testing to ensure we can use healthy water. : Just immerse the pH meters electrode in the target solution, press and hold the HOLD TEMP button after the reading is stable, and then read the data. Before using pH meter again, please clean the probe carefully to avoid affecting the reading. : With the