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Hydrofarm
With a strong portfolio of manufactured and distributed brands, we are one of the leading companies in the global Controlled Environment...
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Shoemakersville, US
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Meters & Controllers

HM Digital 1000 ppm TDS Calibration Solution - 3 Oz (90 mL)
In Stock: 31
$10.99
HM Digital COM-80 Waterproof EC/TDS/Temp Hydro Tester
In Stock: 16
$48.28 $52.99 -9%
Apera Instruments GroStar EC 2.77 Calibration Solution Kit - 8 Oz Each
Apera Instruments GroStar EC 2.77 Calibration Solution Kit - 8 Oz Each
In Stock: 90
$14.47 $14.99 -3%
TrolMaster Digital Flow Meter DFM-3 - 1.5-in
In Stock: 8
$107.97 $115.50 -7%
Apera Instruments GroStar GS3-E Replacement EC Electrode for GS3 Pen
Apera Instruments GroStar GS3-E Replacement EC Electrode for GS3 Pen
In Stock: 98
$45.27 $53.99 -16%
TrolMaster Digital Flow Meter DFM-2 - 1.25-in
TrolMaster Digital Flow Meter DFM-2 - 1.25-in
In Stock: 7
$102.59 $110.25 -7%
HM Digital PH-STOR pH Electrode Storage Solution
Out of stock
$8.88 $8.99 -1%
HM Digital Replacement EC/TDS Probe for Hydromaster
HM Digital Replacement EC/TDS Probe for Hydromaster
Out of stock
$48.85 $57.99 -16%
TrolMaster WCS-1 Water Content Sensor with Cable Set
In Stock: 48
$210.28 $241.50 -13%
TrolMaster PPH-2 Heavy-Duty Intank pH Sensor
In Stock: 12
$171.40 $197.40 -13%
TrolMaster Aqua-X Plus NFS-3 Irrigation Control System with AMP-3 Sensor Board
TrolMaster Aqua-X Plus NFS-3 Irrigation Control System with AMP-3 Sensor Board
Out of stock
$1,146.54 $1,258.95 -9%
TrolMaster Aqua-X NFS-1 Irrigation Control System with Water Detector Set
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 Aqua-X Pro NFS-2 Irrigation Control System with AMP-3 Sensor Board
TrolMaster Aqua-X Pro NFS-2 Irrigation Control System with AMP-3 Sensor Board
In Stock: 4
$2,492.75 $2,623.95 -5%
TrolMaster PCT-1 EC and Temperature Sensor for Reservoir
TrolMaster PCT-1 EC and Temperature Sensor for Reservoir
In Stock: 1
$93.06 $100.28 -7%
TrolMaster PPH-1 pH Sensor for Reservoir
In Stock: 22
$80.92 $88.20 -8%
TrolMaster PCT-2 Heavy-Duty Intank EC and Temperature Sensor
In Stock: 7
$191.99 $219.45 -13%
TrolMaster PCT-3 Heavy-Duty Inline Nutrient EC and Temperature Sensor
In Stock: 11
$212.58 $241.50 -12%
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