pH & Testing

Dial in your grow with precision pH meters, TDS/EC testers, soil moisture meters, and nutrient test kits. Accurate readings mean healthier plants and better yields.

HM Digital Hydromaster Portable - pH/TDS/EC/Temp
Grow Tents Depot
HM Digital Hydromaster Portable - pH/TDS/EC/Temp
$274.95 $254.99
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HM Digital 1000 ppm TDS Calibration Solution 3 oz (90 ml)
Grow Tents Depot
HM Digital 1000 ppm TDS Calibration Solution 3 oz (90 ml)
$44.99
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HM Digital TDS-3 Handheld TDS meter
Grow Tents Depot
HM Digital TDS-3 Handheld TDS meter
$56.99
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HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
Grow Tents Depot
HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester
$85.99
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Multifunction Moisture Meter Replacement Pins (Set of 2)
Sper Scientific Direct
Multifunction Moisture Meter Replacement Pins (Set of 2)
$19.95
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Scanning Moisture Meter
Sper Scientific Direct
Scanning Moisture Meter
$211.60
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Pocket Conductivity / TDS Meter
Sper Scientific Direct
Pocket Conductivity / TDS Meter
$33.35 $27.99
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Pocket Moisture Meter Replacement Pins (Set of 2)
Sper Scientific Direct
Pocket Moisture Meter Replacement Pins (Set of 2)
$11.50
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Multifunction Moisture Meter with Psychrometer
Sper Scientific Direct
Multifunction Moisture Meter with Psychrometer
$160
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Milwaukee MW806 MAX 4-in-1 pH/EC/TDS/Temp. Combo Meter with ATC
Monster Gardens
Milwaukee MW806 MAX 4-in-1 pH/EC/TDS/Temp. Combo Meter with ATC
$461.15
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Milwaukee MW805 MAX 4-in-1 pH/EC/TDS/Temp Combo Meter with ATC
Monster Gardens
Milwaukee MW805 MAX 4-in-1 pH/EC/TDS/Temp Combo Meter with ATC
$461.15
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Milwaukee MW803 MAX Waterproof 4-in-1 pH/EC/TDS/Temp Tester – Low Range
Monster Gardens
Milwaukee MW803 MAX Waterproof 4-in-1 pH/EC/TDS/Temp Tester – Low Range
$219.65
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RapiTest Digital Moisture Meter
Grow Organic
RapiTest Digital Moisture Meter
$25.99
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RapiTest Soil Test Kit pH/N-P-K
Grow Organic
RapiTest Soil Test Kit pH/N-P-K
$23.99
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Soil Moisture Meter
Zenport
Soil Moisture Meter
$14.36
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HM Digital Replacement EC/TDS Sensor for HM-500
Global Garden
HM Digital Replacement EC/TDS Sensor for HM-500
$49.95
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HM Digital Replacement EC/TDS Sensor for HM-100 and HM-200
Global Garden
HM Digital Replacement EC/TDS Sensor for HM-100 and HM-200
$49.95
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HM Digital TDS 1000 ppm Calibration Solution - 20 packets of 20ml
Global Garden
HM Digital TDS 1000 ppm Calibration Solution - 20 packets of 20ml
$24.95
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HM Digital HM-100 Continuous pH/EC/TDS/Temp Monitor
Global Garden
HM Digital HM-100 Continuous pH/EC/TDS/Temp Monitor
$299.99 $290
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Compact Moisture Meter
Sper Scientific Direct
Compact Moisture Meter
$56.35
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HM Digital Handheld TDS Tester Model TDS-3
Atlantis Hydroponics and Garden Supply
HM Digital Handheld TDS Tester Model TDS-3
$19.95
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Milwaukee EC60 PRO Waterproof 3-in-1 EC / TDS/Temp Tester
Monster Gardens
Milwaukee EC60 PRO Waterproof 3-in-1 EC / TDS/Temp Tester
$77.90
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Aqua Master P700 Pro 2 EC PPM TDS Temperature Electrode
Grow Tents Depot
Aqua Master P700 Pro 2 EC PPM TDS Temperature Electrode
$87.99
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AC Infinity Hydro Sensor for Controller AI+, Precise pH, EC, TDS and Water Temp Data Tracking, Enables Equipment Control Programming
Grow Tents Depot
AC Infinity Hydro Sensor for Controller AI+, Precise pH, EC, TDS and Water Temp Data Tracking, Enables Equipment Control Programming
$185.99
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