Meters & Controllers

Hydro Systems E-Dos Electric Pump Flow Meter Kit | with Clamp on Fittings

Product Code:

DOSMHYD10100282

$2,949.75

Aqua-X Pro Controller with AMP-3 Sensor Board,Free App

Product Code:

TRCNFS2

$2,500.19 $2,623.95 -5%

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Aqua-X Plus Controller with AMP-3 Sensor Board,Free App

Product Code:

TRCNFS3

$1,259.54

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Bluelab Connect Pro Controller | Remote Monitoring of pH, EC and Temperature

Product Code:

BLBCONTPRO

$1,242.54

Bluelab Guardian Monitor In-Line Connect | 10 ft In-line Probe Cable

Product Code:

BLBMONGUACONIN

$558.66

Bluelab pH Controller | 6.5ft Probe Cable - Dose pH Up or pH Down

Product Code:

BLBCONTPH

$490.98 $640.60 -23%

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Bluelab Guardian Monitor Connect | 6.5ft Probe Cable

Product Code:

BLBMONGUACON

$425.44

Bluelab Guardian Monitor | 6.5ft Probe Cable

Product Code:

BLBMONGUA

$381.02

Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature

Product Code:

BLBMETCOMPLUS

$380.96

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Bluelab Pulse Multimedia EC & MC Meter | Measures EC, Moisture & Temperature

Product Code:

BLBMETPULSE

$333.22

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Bluelab Connect pH Controller | for Bluelab Connect Devices

Product Code:

BLBCONTPHCON

$330.79 $683.36 -52%

Aqua-X Controller with Water Detector set, Free App

Product Code:

TRCNFS1

$330.74 $348.60 -5%

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Bluelab Combo Meter | 6.5ft Probe Cable

Product Code:

BLBMETCOM

$323.66

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Active Aqua Grow Flow Ebb and Gro Controller Unit w/2 Pumps

Product Code:

GFO7CB

$322.35 $389.33 -17%

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Hanna pH, EC & TDS Tester | High Range

Product Code:

HIHI98130

$261.10

Heavy Duty Nutrient EC+Temp Sensor drop-in/inline compatible

Product Code:

TRCPCT3

$221.39 $241.50 -8%

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Water Content Sensor with Cable Set

Product Code:

TRCWCS1

$218.69 $241.50 -9%

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GroStar GS2 Soil pH Pen

Product Code:

AI31020

$212.78 $256.99 -17%

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HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp

Product Code:

HMD500

$208.38 $359.00 -42%

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Inline EC+Temp Sensor, Heavy Duty

Product Code:

TRCPCT2

$199.79 $219.45 -9%

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Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible

Product Code:

TRCPPH3

$199.79 $219.45 -9%

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Bluelab Soil pH Pen

Product Code:

BLBPENSOILPH

$199.56

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Bluelab pH Probe Inline | 3/4in NPT Thread - Use with 1in Adapter

Product Code:

BLBPROBPHIN

$199.56

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$Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%$

Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%

Product Code:

MIMA871

$190.97 $199.00 -4%

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Inline pH Sensor, Heavy Duty

Product Code:

TRCPPH2

$178.19 $197.40 -10%

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Bluelab Multimedia pH Meter | 6.5ft Probe Cable

Product Code:

BLBMETMULTI

$168.42 $255.74 -34%

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GroStar GS2-E replacement Soil Spear pH electrode

Product Code:

AI58020

$150.68 $181.99 -17%

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GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen

Product Code:

AI21040

$148.20 $178.99 -17%

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Bluelab Commercial Truncheon Nutrient Meter | Measures EC, CF, & PPM

Product Code:

BLBTRUNCOMV2

$147.99

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Bluelab Leap pH Probe | For Bluelab Combo Meter - Bluelab Combo Meter Plus - and Bluelab Multimedia pH Meters

Product Code:

BLBPROBPHLEAP

$138.46

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Hanna GroLine Waterproof Hydroponic pH Tester

Product Code:

HIHI98118

$134.99

Bluelab Connect Range Extender | for Bluelab Connect Devices and Connect Stick

Product Code:

BLBCONEXTEND

$130.82 $202.71 -35%

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Bluelab pH Pen Meter | Measures pH and Temperature

Product Code:

BLBPENPH

$119.35

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Bluelab Connect Stick 2 | for Bluelab Connect Devices

Product Code:

BLBCONSTICK

$112.75 $147.11 -23%

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1.5" Digital Flow Meter

Product Code:

TRCDFM3

$106.64 $115.50 -8%

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Bluelab Truncheon Nutrient Meter V2 | 40cm L - 16 in. L

Product Code:

BLBTRUNV2

$101.51 $128.70 -21%

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1.25" Digital Flow Meter

Product Code:

TRCDFM2

$101.24 $110.25 -8%

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Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature

Product Code:

BLBPENCON

$100.26

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GroStar GS1 pH Pen

Product Code:

AI11010

$98.27 $115.99 -15%

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1" Digital Flow Meter

Product Code:

TRCDFM1

$95.84 $103.95 -8%

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GroStar GS3 EC Pen

Product Code:

AI11030

$94.38 $113.99 -17%

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2-in-1 EC + Temp Sensor for Reservoir

Product Code:

TRCPCT1

$91.79 $100.28 -8%

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Bluelab Combo Meter pH Replacement Probe | pH probe

Product Code:

BLBPROBPH

$87.84

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Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter

Product Code:

MIEC40

$87.74 $95.00 -8%

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Dilution Solutions Pro HM Digital pH Meter | 7.3in x 1.3in x 1.3in

Product Code:

DILPH200

$85.01 $99.95 -15%

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pH Sensor for Reservoir

Product Code:

TRCPPH1

$79.64 $88.20 -10%

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Aeromixer Aerobuddy Timer + Power Controller

Product Code:

AEROB16A

$78.98 $79.00

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GroStar GS4-E replacement pH/EC combo electrode

Product Code:

AI58040

$66.23 $79.99 -17%

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Blumat Digital Moisture Meter | 12in

Product Code:

SUSIG15462

$66.13 $85.99 -23%

Dilution Solutions HM Digital Meter | 7.3in x 1.3in x 1.3in

Product Code:

DILCOM100

$63.75 $74.95 -15%

Gardena Smart Flow Water Meter

Product Code:

GDSFWM9188

$48.84 $58.99 -17%

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GroStar GS3-E replacement EC electrode

Product Code:

AI58030

$44.70 $53.99 -17%

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GroStar GS1-E replacement pH electrode

Product Code:

AI58010

$42.21 $50.99 -17%

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HM Digital Hydromaster Replacement EC/TDS Probe

Product Code:

HMDSPC5

$41.39 $49.99 -17%

HM Digital PH-80 pH/Temperature Meter

Product Code:

HMDPHM80

$38.53 $46.50 -17%

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HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester

Product Code:

HMDCOM80

$38.27 $42.95 -11%

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Dilution Solutions HM Digital pH Tester | 6in x 1.7in x .7in

Product Code:

DILPH80

$37.66 $49.95 -25%

Dilution Solutions HM Digital EC Tester | 6in x 1.7in x .7in

Product Code:

DILCOM80

$33.99 $39.95 -15%

HM Digital Replacement pH Sensor Probe for HM-500

Product Code:

HMDSPP5

$31.88 $59.99 -47%

Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes

Product Code:

BLBCAREKITPHCONL

$31.52

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Hanna Electrode Storage Solution

Product Code:

HIHI70300L

$31.08

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Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration

Product Code:

MIPH600BX

$28.80 $30.00 -4%

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Milwaukee Instruments pH600 Digital pH Pen

Product Code:

MIPH600

$27.82 $29.00 -4%

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Hydrofarm Electronic Water Timer

Product Code:

HGWT

$26.07 $31.49 -17%

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Hanna General-Purpose Cleaning Solution | 230ml

Product Code:

HIHI7061M

$25.64

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Hanna 4.01 pH Buffer Solution | 500ml

Product Code:

HIHI7004L

$24.85

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Hanna 7.01 pH Buffer Solution | 500ml

Product Code:

HIHI7007L

$24.85

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Hanna EC Conductivity Calibration Solution | 1, 413 µS/cm

Product Code:

HIHI7031L

$24.85

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Bluelab pH Probe KCl Storage Solution | 250ml

Product Code:

BLBSTSOL250BL

$24.84

GroStar pH calibration kit (pH 4/7/10, 8 oz. each)

Product Code:

AI61115

$24.00 $28.99 -17%

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Bluelab Meter Carrying Case | Meter Not Included

Product Code:

BLBMETCARRYCASE

$23.97 $29.08 -18%

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Bluelab Probe Care Kit | for Bluelab pH Probes

Product Code:

BLBCAREKITPH

$23.88

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HM Digital TDS-3 Handheld TDS meter

Product Code:

HMDTDS3

$22.76 $33.99 -33%

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Luster Leaf Rapitest Light & Moisture Meter | Dual Tester

Product Code:

LUS1830

$21.74 $29.99 -28%

Dilution Solutions PH Calibration Solution | 20pcs

Product Code:

DILPHP7

$21.24 $24.95 -15%

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Bluelab Conductivity Standard Solution | 500mL- 2.77 EC - Designed for Bluelab Products

Product Code:

BLBEC277500BL

$19.90

Bluelab pH 4.0 Calibration Solutions | 500mL- Designed for Bluelab Products

Product Code:

BLBPH4500BL

$19.90

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Bluelab pH 7.0 Calibration Solutions | 500mL- Designed for Bluelab Products

Product Code:

BLBPH7500BL

$19.90

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GroStar pH Probe Maintanence Kit

Product Code:

AI61170

$19.86 $23.99 -17%

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Bluelab Probe Care Kit | for Bluelab Conductivity Probes

Product Code:

BLBCAREKITCON

$17.20

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P3 International Save a Drop Water Meter

Product Code:

LGP0550

$16.52 $19.95 -17%

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GroStar pH calibration kit (pH 4/7, 8 oz. each)

Product Code:

AI61113

$15.72 $18.99 -17%

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Luster Leaf Rapitest Digital Soil pH Meter | Results From 3.5 - 9.0

Product Code:

LUS1845

$15.41 $21.29 -28%

Bluelab Conductivity Standard Solution | 120ml - 2.77EC

Product Code:

BLBSTSOL120BL

$14.81

Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml

Product Code:

MIMA9004

$13.34 $13.90 -4%

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Milwaukee Instruments pH 7.01 Solution, 230 ml

Product Code:

MIMA9007

$13.34 $13.90 -4%

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SUNPACK 2-Function Plant Sensor Meter | 2-Function - Measures Soil Moisture & pH

Product Code:

SPPSP80002

$12.46 $15.79 -21%

SUNPACK Tri-Meter Moisture, Light & pH | Measures Moisture, Light & pH

Product Code:

SPPSP80003

$12.42 $16.99 -27%

GroStar EC Calibration Kit (2.77 EC, 8 oz. each)

Product Code:

AI71117

$12.41 $14.99 -17%

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Bluelab Conductivity Standard Solution | 250ml - 2.77 EC - Designed for Bluelab Products

Product Code:

BLBEC277250BL

$10.83

Bluelab pH 4.0 Calibration Solution | 250ml - Designed for Bluelab Products

Product Code:

BLBPH4250BL

$10.83

Bluelab pH 7.0 Calibration Solutions | 250ml - Designed for Bluelab Products

Product Code:

BLBPH7250BL

$10.83

Hydrofarm Active Air 3-Way Meter

Product Code:

HYFMGMLP1

$10.10 $14.99 -33%

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HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)

Product Code:

HMDC1000

$9.22 $9.49 -3%

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Active Air 2-Way pH & Moisture Meter | 1ct

Product Code:

HYFMGMP1

$9.12 $13.99 -35%

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Active Air 3-Way Meter

Product Code:

MGMLP1

$9.09 $13.09 -31%

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Hort2O Digital Hygro-Thermometer | 9.8ft Temperature Sensor - Digital Display - Measures Temperatures 32°F to 122°F - Measures Humidity 20% to 98%

Product Code:

HTDHT388

$8.72 $19.99 -56%

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Dilution Solutions EC Calibration Solution | 20pc Box

Product Code:

DILCP1000

$8.25 $24.95 -67%

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Active Air 2-Way Moisture/pH Meter

Product Code:

MGMP1

$7.80 $11.84 -34%

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Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM

Product Code:

DILC1000

$7.63 $8.95 -15%

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HM Digital PH-STOR pH Electrode Storage Solution

Product Code:

HMOPSTOR

$7.02 $8.49 -17%

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Plastair Wrox Color Change Moisture Indicator | 3pc

Product Code:

PSRWROX3PK

$6.82 $7.99 -15%

Dilution Solutions PH Storage Solution | 60cc

Product Code:

DILPHSTOR

$6.78 $7.95 -15%