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#HN-SRL035
American Hydroponics IntelliDose Complete
American Hydroponics IntelliDose Complete
 

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$1,799.99

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#HN-SRL029
American Hydroponics 4 Part Solenoid Board
American Hydroponics 4 Part Solenoid Board
 

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$424.99

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#HN-SRL031
American Hydroponics pH Mini Bare Bones Monitor
American Hydroponics pH Mini Bare Bones Monitor
 

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$579.99

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#HN-SRL027
American Hydroponics pH Mini Monitor Complete
American Hydroponics pH Mini Monitor Complete
 

Price:

$714.99

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#HN-SRL026
American Hydroponics pH Mini Doser Complete
American Hydroponics pH Mini Doser Complete
 

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$829.99

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#HN-SRL025
Oakton pH Testers Replacement Sensor
Oakton pH Testers Replacement Sensor
 

Price:

$170.99

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#HN-HDR955
Waterproof PC Tester - 35 - EC & pH
Waterproof PC Tester - 35 - EC & pH
 

Price:

$241.99

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#HN-HDR949
Waterproof pt. Tester - 35 - pH & TDS
Waterproof pt. Tester - 35 - pH & TDS
 

Price:

$290.99

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#HN-HDR950
Waterproof pH/Temperature Meter
Waterproof pH/Temperature Meter
 

Price:

$167.99

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#HN-HDR745
American Hydroponics 1 Part Solenoid Board
American Hydroponics 1 Part Solenoid Board
 

Price:

$114.99

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#HN-SRL032
Guardian Monitor
Guardian Monitor
 

Price:

$349.99

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#HN-HDR253
pH Tester - 30 - .01 pH Accuracy Temperature Display
pH Tester - 30 - .01 pH Accuracy Temperature Display
 

Price:

$217.99

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#HN-HDR958
Oakton pH Tester - 20 - .01 pH Accuracy ATC
Oakton pH Tester - 20 - .01 pH Accuracy ATC
 

Price:

$227.99

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#HN-HDR957
BlueLab Combo Meter
BlueLab Combo Meter
 

Price:

$299.99

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#HN-HDR247
Oakton Replaceable Electrodes pH Waterproof 2 Pen
Oakton Replaceable Electrodes pH Waterproof 2 Pen
 

Price:

$131.99

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#HN-HDR954
Milwaukee pH Hand Meter SM101
Milwaukee pH Hand Meter SM101
 

Price:

$169.99

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#HN-HDR914
Replacement Probe for MW801 & MW802 Only
Replacement Probe for MW801 & MW802 Only
 

Price:

$139.99

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#HN-HDR913
Waterproof EcoTester - pH2
Waterproof EcoTester - pH2
 

Price:

$155.99

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#HN-HDR948
Replacement Sensor
Replacement Sensor
 

Price:

$172.99

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#HN-HDR951
General Hydroponics pH Control Kit
General Hydroponics pH Control Kit
 

Price:

$29.99

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#HN-HDR074
American Hydroponics pH Stock Tank Kit - 1 Part
American Hydroponics pH Stock Tank Kit - 1 Part
 

Price:

$84.99

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#HN-SRL028
American Hydroponics 27.7 CF Calibration Solution
American Hydroponics 27.7 CF Calibration Solution
 

Price:

$19.99 to $99.99

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#HN-SRL023
Soil pH Meter
Soil pH Meter
 

Price:

$249.99

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#HN-HDR249
Oakton pH Tester - 10 - .1 pH Accuracy ATC
Oakton pH Tester - 10 - .1 pH Accuracy ATC
 

Price:

$177.99

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#HN-HDR956
BlueLab Guardian Monitor Power Supply
BlueLab Guardian Monitor Power Supply
 

Price:

$39.99

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#HN-HDR252
Milwaukee Waterproof PH Tester
Milwaukee Waterproof PH Tester
 

Price:

$113.99

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#HN-HDR910
Hydrofarm ActiveAir 3-Way pH with Light and Moisture Meter
Hydrofarm ActiveAir 3-Way pH with Light and Moisture Meter
 

Price:

$19.99

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#HN-HDR083
Probe pH Electrode
Probe pH Electrode
 

Price:

$103.99

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#HN-HDR934
BlueLab pH Meter with Probe
BlueLab pH Meter with Probe
 

Price:

$199.99

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#HN-HDR248
Oakton Waterproof EcoTester pH1
Oakton Waterproof EcoTester pH1
 

Price:

$89.99

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#HN-HDR027
pH Tester with 1 Point Manual Calibration
pH Tester with 1 Point Manual Calibration
 

Price:

$59.99

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#HN-HDR911
American Hydroponics Twin Relay Box
American Hydroponics Twin Relay Box
 

Price:

$204.99

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#HN-SRL034
Soil pH Probe
Soil pH Probe
 

Price:

$109.99

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#HN-HDR251
pH Replacement Electrode for Combo & pH Meter
pH Replacement Electrode for Combo & pH Meter
 

Price:

$79.99

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#HN-HDR250
Hydrofarm Active Air 2-Way pH and Moisture Meter
Hydrofarm Active Air 2-Way pH and Moisture Meter
 

Price:

$19.99

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#HN-HDR082
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