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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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1 year
Shoemakersville, US
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Meters & Controllers

GroStar GS4 5-in-1 Digital pH/EC/TDS/Temperature Meter
In Stock: 72
$141.25 $178.99 -21%
GroStar GS2 Soil pH/Temperature Meter
In Stock: 116
$202.81 $256.99 -21%
Milwaukee Instruments MA871 Digital Brix Refractometer - 0-85% Range
Out of stock
$135.25 $199.00 -32%
P3 International Save a Drop Water Meter
In Stock: 1850
$19.27 $19.95 -3%
Active Air 3-Way Meter for pH, Light, and Moisture
In Stock: 407
$10.93 $13.09 -17%
Milwaukee Instruments pH600 Digital pH Pen
Out of stock
$34.00
GroStar pH Probe Maintenance Kit
In Stock: 74
$23.17 $23.99 -3%
Active Air 2-Way Moisture/pH Meter
In Stock: 427
$9.83 $11.84 -17%
Active Aqua Grow Flow Ebb and Gro Controller Unit with 2 Pumps
In Stock: 99
$307.25 $389.33 -21%
Hydrofarm Electronic Water Timer
In Stock: 903
$26.40 $31.49 -16%
Apera Instruments GroStar GS3 4-in-1 EC/TDS/Temperature Pen Meter
In Stock: 80
$95.58 $113.99 -16%
Apera Instruments GroStar pH 4/7 Calibration Solution Kit - 8 Oz Each
Out of stock
$18.34 $18.99 -3%
Aeromixer AeroBuddy Timer and Power Controller
In Stock: 27
$61.26 $79.00 -22%
GroStar GS1 Digital pH/Temperature Meter
In Stock: 153
$100.93 $115.99 -13%
Milwaukee Instruments pH600 pH Tester with 1-Point Manual Calibration
Out of stock
$24.67 $35.00 -30%
HM Digital TDS-3 Handheld TDS Meter
In Stock: 21
$26.03 $36.99 -30%
HM Digital PH-80 Digital pH/Temperature Meter
In Stock: 27
$39.97 $47.99 -17%
GroStar GS4-E Replacement pH/EC Combo Electrode for GS4 Meter
In Stock: 71
$67.07 $79.99 -16%
Milwaukee Instruments EC40 PRO EC/TDS Nutrient Meter
Out of stock
$36.58 $95.00 -61%
GroStar GS2-E Replacement Soil Spear pH Electrode for GS2 Soil pH Meter
In Stock: 97
$143.62 $181.99 -21%
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