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Hydroponic pH Meters - New and Used

HydroGeneral hydroponic doser,ppm meter and ph meter hydroponics system $1299.99 pH 025 Mini PH Meter - Portable Digital Monitor Aquarium Electrode Tester $1133.9 New PH Digital Water Meter Hydroponic Plant Tester Pocket Pen W 1 EZ LCD Monitor $575.95 Commercial Grade Combo pH/EC/TDS/Temp Meter $394.85 72-3 WAY ACTIVEAIR METER- Hydrofarm-MGMLP1- test moisture, light, pH levels $379.99 pH Soil Meter $366.8 Bluelab Guardian Monitor EC pH Temp Meter - blue lab conductivity water tester $322.9 72 2-Way Moisture pH Meter Hydrofarm MGMP1 test moisture, and pH levels $311.99 BlueLab Guardian Meter Ph EC TDS TEMP Meter $299.95 Bluelab Guardian Monitor pH/TDS/Temp Meter Blue Lab Hydroponic Aquarium Water pH $297.95 Bluelab Guardian Monitor EC pH Temp Meter - blue lab conductivity water tester $297.9 Bluelab Guardian Monitor EC pH Temp Meter - blue lab conductivity water tester $296.9 BlueLab Guardian Monitor pH Temp EC Conductivity Meter $289.95 Bluelab Guardian Monitor EC pH Temp Meter - blue lab conductivity water tester $286.9 Bluelab Guardian Monitor EC pH Temp Meter - blue lab conductivity water tester $286.9 BLUELAB DIGITAL SOIL PH METER W/ PROBE BLUE LAB TESTER GARDEN $284.99     Next Page >>