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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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10 months 23 days
Shoemakersville, US
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Meters & Controllers

GroStar GS4 5-in-1 Combo Pen
In Stock: 96
$150.35 $178.99 -16%
Milwaukee Instruments MA871 Digital Brix Refractometer, Range 0-85%
Out of stock
$142.16 $199.00 -29%
GroStar GS2 Soil pH Pen
In Stock: 120
$215.87 $256.99 -16%
P3 International Save a Drop Water Meter
In Stock: 2040
$16.76 $19.95 -16%
Milwaukee Instruments pH600 Digital pH Pen
Out of stock
$34.00
Active Air 3-Way Meter
In Stock: 696
$9.23 $13.09 -29%
GroStar pH Probe Maintenance Kit
In Stock: 75
$20.15 $23.99 -16%
Active Air 2-Way Moisture/pH Meter
In Stock: 499
$8.29 $11.84 -30%
Active Aqua Grow Flow Ebb and Gro Controller Unit w/2 Pumps
In Stock: 96
$327.03 $389.33 -16%
GroStar GS3 EC Pen
In Stock: 81
$95.75 $113.99 -16%
GroStar pH 4/7 Calibration Kit
In Stock: 24
$15.95 $18.99 -16%
GroStar GS1 pH Pen
In Stock: 169
$98.27 $115.99 -15%
Hydrofarm Electronic Water Timer
In Stock: 1010
$26.45 $31.49 -16%
Aeromixer Aerobuddy Timer & Power Controller
In Stock: 27
$60.28 $79.00 -24%
Milwaukee Instruments pH 600 pH Tester w/1 Point Manual Calibration
Out of stock
$23.86 $35.00 -32%
HM Digital TDS-3 Handheld TDS meter
In Stock: 29
$25.17 $36.99 -32%
HM Digital PH-80 pH/Temperature Meter
In Stock: 145
$39.98 $47.99 -17%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
Out of stock
$35.38 $95.00 -63%
GroStar GS4-E Replacement Electrode
In Stock: 73
$67.19 $79.99 -16%
GroStar GS2-E Replacement Electrode
In Stock: 97
$152.87 $181.99 -16%
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