Meters & Controllers

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

Product Code:

DOSMHYD10100282

$2,884.20

Save 7%

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

Product Code:

TRCNFS2

$2,444.63 $2,623.95 -7%

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Save 2%

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

Product Code:

TRCNFS3

$1,231.55 $1,258.95 -2%

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

Product Code:

BLBCONTPRO

$1,214.93

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

Product Code:

BLBMONGUACONIN

$546.24

Save 24%

Bluelab Connect pH Controller | for Bluelab Connect Devices

Product Code:

BLBCONTPHCON

$519.96 $683.36 -24%

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Save 24%

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

Product Code:

BLBCONTPH

$487.42 $640.60 -24%

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Bluelab Guardian Monitor Connect | 6.5ft Probe Cable

Product Code:

BLBMONGUACON

$415.98

Bluelab Combo Meter Plus | Measures pH, Conductivity & Temperature

Product Code:

BLBMETCOMPLUS

$346.50

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Save 7%

Aqua-X Controller with Water Detector set, Free App

Product Code:

TRCNFS1

$323.39 $348.60 -7%

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Save 18%

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

Product Code:

GFO7CB

$320.02 $389.33 -18%

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

Product Code:

BLBMETPULSE

$303.09

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Save 18%

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

Product Code:

HMD500

$294.55 $359.00 -18%

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Bluelab Combo Meter | 6.5ft Probe Cable

Product Code:

BLBMETCOM

$294.40

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Hanna pH, EC & TDS Tester | High Range

Product Code:

HIHI98130

$255.30

Save 10%

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

Product Code:

TRCPCT3

$216.47 $241.50 -10%

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Save 11%

Water Content Sensor with Cable Set

Product Code:

TRCWCS1

$213.83 $241.50 -11%

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Save 18%

GroStar GS2 Soil pH Pen

Product Code:

AI31020

$211.24 $256.99 -18%

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Save 11%

Inline EC+Temp Sensor, Heavy Duty

Product Code:

TRCPCT2

$195.35 $219.45 -11%

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Save 11%

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

Product Code:

TRCPPH3

$195.35 $219.45 -11%

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

Save 6%

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

Product Code:

MIMA871

$186.73 $199.00 -6%

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Bluelab Soil pH Pen

Product Code:

BLBPENSOILPH

$181.50

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

Product Code:

BLBPROBPHIN

$181.50

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Save 52%

Bluelab Guardian Monitor | 6.5ft Probe Cable

Product Code:

BLBMONGUA

$176.32 $366.91 -52%

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Save 12%

Inline pH Sensor, Heavy Duty

Product Code:

TRCPPH2

$174.23 $197.40 -12%

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Save 39%

Bluelab Multimedia pH Meter | 6.5ft Probe Cable

Product Code:

BLBMETMULTI

$155.54 $255.74 -39%

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Save 24%

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

Product Code:

BLBCONEXTEND

$154.23 $202.71 -24%

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Save 18%

GroStar GS2-E replacement Soil Spear pH electrode

Product Code:

AI58020

$149.59 $181.99 -18%

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Save 18%

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

Product Code:

AI21040

$147.12 $178.99 -18%

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

Product Code:

BLBTRUNCOMV2

$134.61

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Hanna GroLine Waterproof Hydroponic pH Tester

Product Code:

HIHI98118

$131.99

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

Product Code:

BLBPROBPHLEAP

$125.93

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Save 24%

Bluelab Connect Stick 2 | for Bluelab Connect Devices

Product Code:

BLBCONSTICK

$111.93 $147.11 -24%

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Bluelab pH Pen Meter | Measures pH and Temperature

Product Code:

BLBPENPH

$108.56

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Save 10%

1.5" Digital Flow Meter

Product Code:

TRCDFM3

$104.27 $115.50 -10%

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Save 14%

GroStar GS1 pH Pen

Product Code:

AI11010

$99.72 $115.99 -14%

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Save 10%

1.25" Digital Flow Meter

Product Code:

TRCDFM2

$98.99 $110.25 -10%

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Save 27%

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

Product Code:

BLBTRUNV2

$93.75 $128.70 -27%

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Save 10%

1" Digital Flow Meter

Product Code:

TRCDFM1

$93.71 $103.95 -10%

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Save 18%

GroStar GS3 EC Pen

Product Code:

AI11030

$93.69 $113.99 -18%

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Bluelab Conductivity Pen Meter | Measures Conductivity and Temperature

Product Code:

BLBPENCON

$91.19

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Save 11%

2-in-1 EC + Temp Sensor for Reservoir

Product Code:

TRCPCT1

$89.75 $100.28 -11%

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Save 6%

Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter

Product Code:

MIEC40

$89.14 $95.00 -6%

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Bluelab Combo Meter pH Replacement Probe | pH probe

Product Code:

BLBPROBPH

$79.90

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Save 12%

pH Sensor for Reservoir

Product Code:

TRCPPH1

$77.87 $88.20 -12%

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Save 2%

Aeromixer Aerobuddy Timer + Power Controller

Product Code:

AEROB16A

$77.22 $79.00 -2%

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Save 27%

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

Product Code:

DILPH200

$72.84 $99.95 -27%

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Save 18%

GroStar GS4-E replacement pH/EC combo electrode

Product Code:

AI58040

$65.75 $79.99 -18%

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Save 24%

Blumat Digital Moisture Meter | 12in

Product Code:

SUSIG15462

$65.65 $85.99 -24%

Save 16%

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

Product Code:

DILCOM100

$63.27 $74.95 -16%

Save 18%

HM Digital Replacement pH Sensor Probe for HM-500

Product Code:

HMDSPP5

$49.31 $59.99 -18%

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Save 18%

Gardena Smart Flow Water Meter

Product Code:

GDSFWM9188

$48.48 $58.99 -18%

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Save 18%

GroStar GS3-E replacement EC electrode

Product Code:

AI58030

$44.37 $53.99 -18%

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Save 18%

GroStar GS1-E replacement pH electrode

Product Code:

AI58010

$41.91 $50.99 -18%

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Save 18%

HM Digital Hydromaster Replacement EC/TDS Probe

Product Code:

HMDSPC5

$41.09 $49.99 -18%

Save 18%

HM Digital PH-80 pH/Temperature Meter

Product Code:

HMDPHM80

$38.25 $46.50 -18%

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Save 13%

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

Product Code:

HMDCOM80

$37.42 $42.95 -13%

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Save 25%

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

Product Code:

DILPH80

$37.39 $49.95 -25%

Save 16%

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

Product Code:

DILCOM80

$33.74 $39.95 -16%

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Hanna Electrode Storage Solution

Product Code:

HIHI70300L

$30.39

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Milwaukee Instruments pH600 Digital pH Pen

Product Code:

MIPH600

$29.94

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Bluelab Probe Care Kit | for Bluelab pH & Conductivity Probes

Product Code:

BLBCAREKITPHCONL

$28.67

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Save 6%

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

Product Code:

MIPH600BX

$28.16 $30.00 -6%

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Save 18%

Hydrofarm Electronic Water Timer

Product Code:

HGWT

$25.88 $31.49 -18%

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Hanna General-Purpose Cleaning Solution | 230ml

Product Code:

HIHI7061M

$25.07

Hanna 4.01 pH Buffer Solution | 500ml

Product Code:

HIHI7004L

$24.30

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Hanna 7.01 pH Buffer Solution | 500ml

Product Code:

HIHI7007L

$24.30

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

Product Code:

HIHI7031L

$24.30

Save 18%

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

Product Code:

AI61115

$23.82 $28.99 -18%

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Bluelab pH Probe KCl Storage Solution | 250ml

Product Code:

BLBSTSOL250BL

$22.59

Save 34%

HM Digital TDS-3 Handheld TDS meter

Product Code:

HMDTDS3

$22.59 $33.99 -34%

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Save 24%

Bluelab Meter Carrying Case | Meter Not Included

Product Code:

BLBMETCARRYCASE

$22.13 $29.08 -24%

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Bluelab Probe Care Kit | for Bluelab pH Probes

Product Code:

BLBCAREKITPH

$21.71

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Save 28%

Luster Leaf Rapitest Light & Moisture Meter | Dual Tester

Product Code:

LUS1830

$21.58 $29.99 -28%

Save 16%

Dilution Solutions PH Calibration Solution | 20pcs

Product Code:

DILPHP7

$21.08 $24.95 -16%

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Save 18%

GroStar pH Probe Maintanence Kit

Product Code:

AI61170

$19.71 $23.99 -18%

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

Product Code:

BLBEC277500BL

$18.11

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

Product Code:

BLBPH4500BL

$18.11

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

Product Code:

BLBPH7500BL

$18.11

Save 18%

P3 International Save a Drop Water Meter

Product Code:

LGP0550

$16.40 $19.95 -18%

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Bluelab Probe Care Kit | for Bluelab Conductivity Probes

Product Code:

BLBCAREKITCON

$15.64

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Save 18%

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

Product Code:

AI61113

$15.60 $18.99 -18%

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Save 28%

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

Product Code:

LUS1845

$15.30 $21.29 -28%

Bluelab Conductivity Standard Solution | 120ml - 2.77EC

Product Code:

BLBSTSOL120BL

$13.46

Save 6%

Milwaukee Instruments pH 4.01 Calibration Solution, 230 ml

Product Code:

MIMA9004

$13.04 $13.90 -6%

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Save 6%

Milwaukee Instruments pH 7.01 Solution, 230 ml

Product Code:

MIMA9007

$13.04 $13.90 -6%

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Save 27%

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

Product Code:

SPPSP80003

$12.33 $16.99 -27%

Save 18%

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

Product Code:

AI71117

$12.32 $14.99 -18%

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Save 21%

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

Product Code:

SPPSP80002

$10.59 $13.49 -21%

Save 33%

Hydrofarm Active Air 3-Way Meter

Product Code:

HYFMGMLP1

$10.03 $14.99 -33%

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

Product Code:

BLBEC277250BL

$9.86

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

Product Code:

BLBPH4250BL

$9.86

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

Product Code:

BLBPH7250BL

$9.86

Save 35%

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

Product Code:

HYFMGMP1

$9.06 $13.99 -35%

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Save 31%

Active Air 3-Way Meter

Product Code:

MGMLP1

$9.03 $13.09 -31%

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Save 5%

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

Product Code:

HMDC1000

$9.02 $9.49 -5%

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Save 67%

Dilution Solutions EC Calibration Solution | 20pc Box

Product Code:

DILCP1000

$8.19 $24.95 -67%

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Save 32%

Active Air 2-Way Moisture/pH Meter

Product Code:

MGMP1

$8.11 $11.84 -32%

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Save 63%

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

$7.30 $19.99 -63%

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Save 18%

HM Digital PH-STOR pH Electrode Storage Solution

Product Code:

HMOPSTOR

$6.97 $8.49 -18%

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Save 15%

Plastair Wrox Color Change Moisture Indicator | 3pc

Product Code:

PSRWROX3PK

$6.77 $7.99 -15%

Save 15%

Dilution Solutions PH Storage Solution | 60cc

Product Code:

DILPHSTOR

$6.73 $7.95 -15%

Save 27%

Dilution Solutions HM Digital/EC Calibration Solution | 1000 PPM

Product Code:

DILC1000

$6.53 $8.95 -27%

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