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Grow Lights Grow Systems, Parts & Pumps Plant Food Growing Containers / Media pH/TDS Testing Meters - pH Meters - TDS / PPM Meters - Combo Meters - Meters for Soil - Other Meters/Accessories - Calibration Solutions - pH Test Kits - Thermometers & Hygrometers - Measuring Cups / Devices Climate Control Propagation Supplies Pest & Disease Control Garden Tools Books & Magazines Sprout Seeds & Supplies Clothing Brew Supplies 
 General Hydroponics Eco-Grower $233.95 $210.56 Save: 10% off Nursery Flat White $1.49 $1.34 Save: 10% off Truncheon Commercial TDS Meter $134.95 $121.46 Save: 10% off 
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 Combo Meters Nutradip Trimeter EC/pH/Temp MonitorThis meter gives you the ability to monitor pH level, Nutrient Levels in EC and Nutrient Temperature. This continuous monitoring system requires no... $232.95 $209.66 Save: 10% off Nutradip Trimeter PPM/pH/Temp MonitorThis meter gives you the ability to monitor pH level, Nutrient Levels in PPM and Nutrient Temperature. This continuous monitoring system requires no... $232.95 $209.66 Save: 10% off  Oakton Multi PT Testr 35Great for water, laboratory or plant use, this multi Testr features single-junction pH electrodes for longer life and wider range of sample... $183.95 $165.56 Save: 10% off  Milwaukee Inst. Smart pH/EC/TDS Meter MW802The Milwaukee Smart Combo Meter (MW802) is a compact portable meter with a faster micro processor then most competitve meters. This meter allows you... $229.95 $206.96 Save: 10% off  Hanna Waterproof Combo Handheld MeterThe Hanna Waterproof Combo Handheld Meter (HI 98129) offers high accuracy pH, EC/TDS and temperature measurements in a single tester! No more... $195.95 $176.36 Save: 10% off  Hanna Waterproof pH Meter Replacement ProbeReplacement probe for Hanna Waterproof pH Meter. Calibration Solutions Sold Separately 7.01 pH Calibration Solution 4.01 pH Calibration Solution pH... $68.95 $62.06 Save: 10% off  Hanna Grocheck Combo Meter HI 9813-6Water resistant On-screen tutorial messages for calibration BEPS (Battery Error Prevention System) alerts the user in the event that low battery... $267.95 $241.16 Save: 10% off  Hanna HI1285-6 Combo Replacement ProbePreamplified pH and EC Probe with CAL CHECK™ for use with HI 9813 Series. Recommended for greenhouses, hydroponics, environmental monitoring, water... $136.95 $123.26 Save: 10% off  Hanna Combo pH/EC/TDS/temp Monitor HI991404The Combo HI 991404 meter is designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators... $249.95 $224.96 Save: 10% off |
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