Hydroponic Meters & Controllers | pH, EC & Automation

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

In Stock: 24

$48.28 $52.99 -9%

Dilution Solutions pH Calibration and Storage Solution Packets - 20-Count

In Stock: 89

$23.53 $24.95 -6%

Apera Instruments GroStar EC 2.77 Calibration Solution Kit - 8 Oz Each

In Stock: 109

$14.47 $14.99 -3%

Bluelab Probe Care Kit for pH and Conductivity Probes

In Stock: 60

$33.53

Apera Instruments GroStar GS3-E Replacement EC Electrode for GS3 Pen

In Stock: 98

$45.27 $53.99 -16%

TrolMaster Digital Flow Meter DFM-3 - 1.5-in

In Stock: 10

$107.97 $115.50 -7%

Hanna Instruments HI7007L pH 7.0 Buffer Calibration Solution - 500 mL - NIST Traceable

In Stock: 2

$29.69

Hanna Instruments HI70300L Electrode Storage Solution - 500 mL - For pH Electrode Preservation

In Stock: 3

$29.69

HM Digital PH-STOR pH Electrode Storage Solution

In Stock: 5

$8.88 $8.99 -1%

TrolMaster Digital Flow Meter DFM-2 - 1.25-in

In Stock: 9

$102.59 $110.25 -7%

Hanna Instruments HI7004L pH 4.0 Buffer Calibration Solution - 500 mL - NIST Traceable

In Stock: 7

$29.69

HM Digital Replacement EC/TDS Probe for Hydromaster

Out of stock

$48.85 $57.99 -16%

Hanna Instruments HI7061M General Purpose Electrode Cleaning Solution - 230 mL

In Stock: 3

$25.64

TrolMaster PPH-2 Heavy-Duty Intank pH Sensor

In Stock: 12

$171.40 $197.40 -13%

TrolMaster WCS-1 Water Content Sensor with Cable Set

In Stock: 48

$210.28 $241.50 -13%

Plastair WROX Color-Changing Plant Moisture Indicator - 3-Pack

In Stock: 12

$93.48 / $7.79 per unit
(minimum purchase of 12)

TrolMaster Aqua-X Plus NFS-3 Irrigation Control System with AMP-3 Sensor Board

In Stock: 4

$1,146.54 $1,258.95 -9%

TrolMaster Aqua-X NFS-1 Irrigation Control System with Water Detector Set

Out of stock

$316.39 $348.60 -9%

TrolMaster PPH-3 Heavy-Duty Inline Nutrient pH Sensor

In Stock: 9

$191.99 $219.45 -13%

TrolMaster PCT-1 EC and Temperature Sensor for Reservoir

In Stock: 8

$93.06 $100.28 -7%